[CLANG-TIDY] readability-simplify-subscript-expr

.clang-tidy

@@ -42,6 +42,7 @@ readability-redundant-control-flow,
 readability-redundant-function-ptr-dereference,
 readability-redundant-smartptr-get,
 readability-redundant-string-cstr,
+readability-simplify-subscript-expr,
 readability-static-accessed-through-instance,
 readability-static-definition-in-anonymous-namespace,
 readability-string-compare,