remove TODO and try/except after looking at zmq docs

parsl/executors/high_throughput/interchange.py

@@ -344,24 +344,15 @@ def start(self) -> None:
 
     def process_task_incoming(self) -> None:
         """Process incoming task message(s).
-        TODO: is a poll event here level or edge triggered? (i.e. does this need
-        to loop until all messages are absorbed? I think it's level triggered,
-        based on how the other code is written.
         """
 
         if self.task_incoming in self.socks and self.socks[self.task_incoming] == zmq.POLLIN:
             logger.debug("start task_incoming section")
-            try:
-                msg = self.task_incoming.recv_pyobj()
-                logger.debug("putting message onto pending_task_queue")
-                self.pending_task_queue.put(msg)
-                self.task_counter += 1
-                logger.debug(f"Fetched {self.task_counter} tasks so far")
-            except zmq.Again:
-                # We got a poll event but no message
-                # In some ZMQ situations, this is a legitimate happening
-                # I'm not exactly sure here.
-                logger.debug("zmq.Again with {} tasks in internal queue".format(self.pending_task_queue.qsize()))
+            msg = self.task_incoming.recv_pyobj()
+            logger.debug("putting message onto pending_task_queue")
+            self.pending_task_queue.put(msg)
+            self.task_counter += 1
+            logger.debug(f"Fetched {self.task_counter} tasks so far")
 
     def process_task_outgoing_incoming(
             self,