remove whitespace in assertion of should_take_into_account_request_timeout_if_less_than_server_timeout test

Author: tomekl007

integration-tests/src/test/java/com/datastax/dse/driver/api/core/graph/GraphTimeoutsIT.java

@@ -172,7 +172,7 @@ public void should_take_into_account_request_timeout_if_less_than_server_timeout
               "evaluation exceeded",
               "threshold of ",
               Long.toString(clientTimeout.toMillis()),
-              " ms");
+              "ms");
     }
   }
 }