[clang] Remove std::move in GenerateModuleAction::CreateMultiplexConsumer (NFC)

llvm-project/clang/lib/Frontend/FrontendActions.cpp:213:10:
error: moving a local object in a return statement prevents copy elision [-Werror,-Wpessimizing-move]
  213 |   return std::move(Consumers);
      |          ^
/Users/jiefu/llvm-project/clang/lib/Frontend/FrontendActions.cpp:213:10: note: remove std::move call here
  213 |   return std::move(Consumers);
      |          ^~~~~~~~~~         ~
1 error generated.

Author: DamonFool

clang/lib/Frontend/FrontendActions.cpp

@@ -210,7 +210,7 @@ GenerateModuleAction::CreateMultiplexConsumer(CompilerInstance &CI,
       +CI.getFrontendOpts().BuildingImplicitModule));
   Consumers.push_back(CI.getPCHContainerWriter().CreatePCHContainerGenerator(
       CI, std::string(InFile), OutputFile, std::move(OS), Buffer));
-  return std::move(Consumers);
+  return Consumers;
 }
 
 std::unique_ptr<ASTConsumer>