[clang-tidy] Remove STL dependency from a test.

llvm-svn: 268494

clang-tools-extra/test/clang-tidy/misc-unconventional-assign-operator.cpp

@@ -1,6 +1,16 @@
 // RUN: %check_clang_tidy %s misc-unconventional-assign-operator %t -- -- -std=c++11 -isystem %S/Inputs/Headers
 
-#include <utility>
+namespace std {
+template <typename T>
+struct remove_reference { typedef T type; };
+template <typename T>
+struct remove_reference<T &> { typedef T type; };
+template <typename T>
+struct remove_reference<T &&> { typedef T type; };
+template <typename T>
+typename remove_reference<T>::type &&move(T &&t);
+}
+
 
 struct Good {
   Good& operator=(const Good&);