removal of set_environment

Author: pawanw17

manager/manager/launcher/launcher_ros2_api.py

@@ -54,4 +54,4 @@ def terminate(self):
             cmd = kill_cmd + 'gzserver'
             subprocess.call(cmd, shell=True, stdout=subprocess.PIPE, bufsize=1024, universal_newlines=True)
             cmd = kill_cmd + 'spawn_model.launch.py'
-            subprocess.call(cmd, shell=True, stdout=subprocess.PIPE, bufsize=1024, universal_newlines=True)
+            subprocess.call(cmd, shell=True, stdout=subprocess.PIPE, bufsize=1024, universal_newlines=True)