Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for requiring the macro. NFC; LLVM edition.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229340 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Support/Regex.h

@@ -46,7 +46,7 @@ namespace llvm {
 
     /// Compiles the given regular expression \p Regex.
     Regex(StringRef Regex, unsigned Flags = NoFlags);
-    Regex(const Regex &) LLVM_DELETED_FUNCTION;
+    Regex(const Regex &) = delete;
     Regex &operator=(Regex regex) {
       std::swap(preg, regex.preg);
       std::swap(error, regex.error);