llvm-strings: remove default for -Wcovered-switch-default

Fix the -Werror build by removing the unnecessary default case in the
covered switch.  NFC

llvm-svn: 292708

Author: compnerd

llvm/tools/llvm-strings/llvm-strings.cpp

@@ -57,7 +57,6 @@ static void strings(raw_ostream &OS, StringRef FileName, StringRef Contents) {
     if (PrintFileName)
       OS << FileName << ":";
     switch (Radix) {
-    default:
     case none:
       break;
     case octal: