[clang-tools-extra] Don't including None.h (NFC)

These source files no longer use None, so they do not need to include
None.h.

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716

Author: kazutakahirata

clang-tools-extra/clangd/AST.cpp

@@ -30,7 +30,6 @@
 #include "clang/Basic/Specifiers.h"
 #include "clang/Index/USRGeneration.h"
 #include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallSet.h"

clang-tools-extra/clangd/ClangdLSPServer.cpp

@@ -27,7 +27,6 @@
 #include "clang/Tooling/Core/Replacement.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/FunctionExtras.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/ScopeExit.h"
 #include "llvm/ADT/StringRef.h"

clang-tools-extra/clangd/ExpectedTypes.cpp

@@ -12,7 +12,6 @@
 #include "clang/AST/Type.h"
 #include "clang/Index/USRGeneration.h"
 #include "clang/Sema/CodeCompleteConsumer.h"
-#include "llvm/ADT/None.h"
 
 namespace clang {
 namespace clangd {

clang-tools-extra/clangd/FS.cpp

@@ -8,7 +8,6 @@
 
 #include "FS.h"
 #include "clang/Basic/LLVM.h"
-#include "llvm/ADT/None.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/VirtualFileSystem.h"
 

clang-tools-extra/clangd/GlobalCompilationDatabase.cpp

@@ -18,7 +18,6 @@
 #include "clang/Tooling/CompilationDatabase.h"
 #include "clang/Tooling/CompilationDatabasePluginRegistry.h"
 #include "clang/Tooling/JSONCompilationDatabase.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/PointerIntPair.h"
 #include "llvm/ADT/STLExtras.h"

clang-tools-extra/clangd/Hover.cpp

@@ -38,7 +38,6 @@
 #include "clang/Basic/TokenKinds.h"
 #include "clang/Index/IndexSymbol.h"
 #include "clang/Tooling/Syntax/Tokens.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallVector.h"

clang-tools-extra/clangd/IncludeFixer.cpp

@@ -33,7 +33,6 @@
 #include "clang/Sema/Sema.h"
 #include "clang/Sema/TypoCorrection.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringExtras.h"

clang-tools-extra/clangd/PathMapping.cpp

@@ -9,7 +9,6 @@
 #include "Transport.h"
 #include "URI.h"
 #include "support/Logger.h"
-#include "llvm/ADT/None.h"
 #include "llvm/Support/Error.h"
 #include "llvm/Support/Path.h"
 #include <algorithm>

clang-tools-extra/clangd/Preamble.cpp

@@ -32,7 +32,6 @@
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringRef.h"

clang-tools-extra/clangd/SemanticHighlighting.cpp

@@ -27,7 +27,6 @@
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Tooling/Syntax/Tokens.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringRef.h"

clang-tools-extra/clangd/index/StdLib.cpp

@@ -22,7 +22,6 @@
 #include "clang/Frontend/CompilerInvocation.h"
 #include "clang/Lex/PreprocessorOptions.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Path.h"

clang-tools-extra/clangd/index/remote/server/Server.cpp

@@ -22,7 +22,6 @@
 #include "support/ThreadsafeFS.h"
 #include "support/Trace.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/Chrono.h"
 #include "llvm/Support/CommandLine.h"

clang-tools-extra/clangd/refactor/Rename.cpp

@@ -26,7 +26,6 @@
 #include "clang/Basic/LLVM.h"
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Tooling/Syntax/Tokens.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Support/Casting.h"

clang-tools-extra/clangd/refactor/tweaks/DefineInline.cpp

@@ -32,7 +32,6 @@
 #include "clang/Tooling/Core/Replacement.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/DenseSet.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"

clang-tools-extra/clangd/refactor/tweaks/DefineOutline.cpp

@@ -27,7 +27,6 @@
 #include "clang/Basic/TokenKinds.h"
 #include "clang/Tooling/Core/Replacement.h"
 #include "clang/Tooling/Syntax/Tokens.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringRef.h"

clang-tools-extra/clangd/refactor/tweaks/ExpandAutoType.cpp

@@ -11,7 +11,6 @@
 #include "clang/AST/Type.h"
 #include "clang/AST/TypeLoc.h"
 #include "clang/Basic/LLVM.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/Support/Error.h"
 #include <AST.h>

clang-tools-extra/clangd/refactor/tweaks/ExtractFunction.cpp

@@ -64,7 +64,6 @@
 #include "clang/Basic/SourceManager.h"
 #include "clang/Tooling/Core/Replacement.h"
 #include "clang/Tooling/Refactoring/Extract/SourceExtraction.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallSet.h"

clang-tools-extra/clangd/refactor/tweaks/ObjCMemberwiseInitializer.cpp

@@ -18,7 +18,6 @@
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Tooling/Core/Replacement.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/iterator_range.h"

clang-tools-extra/clangd/support/ThreadsafeFS.cpp

@@ -8,7 +8,6 @@
 
 #include "support/ThreadsafeFS.h"
 #include "Logger.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/Path.h"

clang-tools-extra/clangd/unittests/ClangdTests.cpp

@@ -25,7 +25,6 @@
 #include "clang/Sema/CodeCompleteConsumer.h"
 #include "clang/Tooling/ArgumentsAdjusters.h"
 #include "clang/Tooling/Core/Replacement.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringMap.h"

clang-tools-extra/clangd/unittests/ExpectedTypeTest.cpp

@@ -11,7 +11,6 @@
 #include "TestTU.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/AST/Decl.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/StringRef.h"
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"

clang-tools-extra/clangd/unittests/HeaderSourceSwitchTests.cpp

@@ -13,7 +13,6 @@
 #include "TestTU.h"
 #include "index/MemIndex.h"
 #include "support/Path.h"
-#include "llvm/ADT/None.h"
 #include "llvm/Testing/Support/SupportHelpers.h"
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"

clang-tools-extra/clangd/unittests/HoverTests.cpp

@@ -15,7 +15,6 @@
 #include "index/MemIndex.h"
 #include "clang/AST/Attr.h"
 #include "clang/Index/IndexSymbol.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/StringRef.h"
 
 #include "gmock/gmock.h"

clang-tools-extra/clangd/unittests/TestFS.cpp

@@ -10,7 +10,6 @@
 #include "URI.h"
 #include "support/Logger.h"
 #include "support/Path.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/Path.h"

clang-tools-extra/pseudo/lib/Forest.cpp

@@ -9,7 +9,6 @@
 #include "clang-pseudo/Forest.h"
 #include "clang-pseudo/Token.h"
 #include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/None.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/FormatVariadic.h"