Removing pessimizing moves.

Pass #2.
diff --git a/test/cpp/qps/server_async.cc b/test/cpp/qps/server_async.cc
index c25d5af..0ed2048 100644
--- a/test/cpp/qps/server_async.cc
+++ b/test/cpp/qps/server_async.cc
@@ -68,7 +68,7 @@
 
     builder.RegisterAsyncService(&async_service_);
     for (int i = 0; i < config.threads(); i++) {
-      srv_cqs_.emplace_back(std::move(builder.AddCompletionQueue()));
+      srv_cqs_.emplace_back(builder.AddCompletionQueue());
     }
 
     server_ = builder.BuildAndStart();