Re-enable executor test on rmw_connextdds. (ros2#2693)

It supports the events executor now, so re-enable the test.

Signed-off-by: Chris Lalancette <clalancette@gmail.com>
Signed-off-by: HarunTeper <harun.teper@tu-dortmund.de>

Author: clalancette

rclcpp/test/rclcpp/executors/test_executors.cpp

@@ -861,13 +861,6 @@ TYPED_TEST(TestExecutors, releaseOwnershipEntityAfterSpinningCancel)
 TYPED_TEST(TestExecutors, testRaceDropCallbackGroupFromSecondThread)
 {
   using ExecutorType = TypeParam;
-  // rmw_connextdds doesn't support events-executor
-  if (
-    std::is_same<ExecutorType, rclcpp::experimental::executors::EventsExecutor>() &&
-    std::string(rmw_get_implementation_identifier()).find("rmw_connextdds") == 0)
-  {
-    GTEST_SKIP();
-  }
 
   // Create an executor
   ExecutorType executor;