drop unneeded && qualifier from query::result_merger::get()

query_result_merger.hh

@@ -25,7 +25,7 @@ public:
     // FIXME: Eventually we should return a composite_query_result here
     // which holds the vector of query results and which can be quickly turned
     // into packet fragments by the transport layer without copying the data.
-    foreign_ptr<lw_shared_ptr<query::result>> get() && {
+    foreign_ptr<lw_shared_ptr<query::result>> get() {
         auto merged = make_lw_shared<query::result>();
 
         size_t total_size = 0;