ClangRefactoring: Remove redundant std::move

Detected by GCC9.

Change-Id: I12b4de063a736d17fb6a7105d622812df1981a1a
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>
Reviewed-by: Marco Bubke <marco.bubke@qt.io>

src/tools/clangrefactoringbackend/source/symbollocationfinderaction.cpp

@@ -93,7 +93,7 @@ std::unique_ptr<clang::ASTConsumer> SymbolLocationFinderAction::newASTConsumer()
 
   consumer->setSourceLocations(&m_sourceLocations);
 
-  return std::move(consumer);
+  return consumer;
 }
 
 } // namespace ClangBackEnd