Revert r111082. No warnings for this common pattern.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111102 91177308-0d34-0410-b5e6-96231b3b80d8

utils/unittest/googletest/include/gtest/internal/gtest-port.h

@@ -556,12 +556,12 @@
 // A macro to disallow operator=
 // This should be used in the private: declarations for a class.
 #define GTEST_DISALLOW_ASSIGN_(type)\
-  void operator=(type const &) GTEST_ATTRIBUTE_UNUSED_
+  void operator=(type const &)
 
 // A macro to disallow copy constructor and operator=
 // This should be used in the private: declarations for a class.
 #define GTEST_DISALLOW_COPY_AND_ASSIGN_(type)\
-  type(type const &) GTEST_ATTRIBUTE_UNUSED_;\
+  type(type const &);\
   GTEST_DISALLOW_ASSIGN_(type)
 
 // Tell the compiler to warn about unused return values for functions declared