[CLANG-TIDY] readability-redundant-declaration

.clang-tidy

@@ -40,6 +40,7 @@ readability-isolate-declaration,
 readability-misleading-indentation,
 readability-misplaced-array-index,
 readability-redundant-control-flow,
+readability-redundant-declaration,
 readability-redundant-function-ptr-dereference,
 readability-redundant-smartptr-get,
 readability-redundant-string-cstr,