Remove push file from pbspro. see slurm commit for justification.

parsl/providers/pbspro/pbspro.py

@@ -183,15 +183,13 @@ def submit(self, command, tasks_per_node, job_name="parsl"):
         logger.debug("Writing submit script")
         self._write_submit_script(self.template_string, script_path, job_name, job_config)
 
-        channel_script_path = self.channel.push_file(script_path, self.channel.script_dir)
-
         submit_options = ''
         if self.queue is not None:
             submit_options = '{0} -q {1}'.format(submit_options, self.queue)
         if self.account is not None:
             submit_options = '{0} -A {1}'.format(submit_options, self.account)
 
-        launch_cmd = "qsub {0} {1}".format(submit_options, channel_script_path)
+        launch_cmd = "qsub {0} {1}".format(submit_options, script_path)
         retcode, stdout, stderr = self.execute_wait(launch_cmd)
 
         job_id = None