[lldb] Always set the minimum OS version in the Darwin builder

Author: JDevlieghere

lldb/packages/Python/lldbsuite/test/builders/darwin.py

@@ -96,7 +96,7 @@ def getArchCFlags(self, arch):
         version_min = ""
         if env == "simulator":
             version_min = "-m{}-simulator-version-min={}".format(os, version)
-        elif os == "macosx":
+        else:
             version_min = "-m{}-version-min={}".format(os, version)
 
         return ["ARCH_CFLAGS=-target {} {}".format(triple, version_min)]