remove redundant terminate call

error_handler does not return any value.
condition "if not self.error_handler" always True
the error_handler (pytest_reportportal.service.PyTestServiceClass#async_error_handler) by himself call terminate method inside.
so the second terminate call is redundant

Author: Aliaksandr Trush

reportportal_client/service_async.py

@@ -204,8 +204,7 @@ def process_item(self, item):
                 getattr(self.rp_client, method)(**kwargs)
         except Exception:
             if self.error_handler:
-                if not self.error_handler(sys.exc_info()):
-                    self.terminate(nowait=True)
+                self.error_handler(sys.exc_info())
             else:
                 self.terminate(nowait=True)
                 raise