Remove listen_to_children function

grand_challenge_forge/partials/example-evaluation-method/example-evaluation-method{{cookiecutter._}}/evaluate.py.j2

@@ -26,7 +26,7 @@ import random
 from statistics import mean
 from pathlib import Path
 from pprint import pformat, pprint
-from helpers import run_prediction_processing, listen_to_children_errors
+from helpers import run_prediction_processing
 
 INPUT_DIRECTORY = Path("/input")
 OUTPUT_DIRECTORY = Path("/output")
@@ -42,9 +42,6 @@ def process(job):
     report += pformat(job)
     report += "\n"
 
-    # Before we start, ensure we catch any child-process crashes
-    listen_to_children_errors()
-
     # Firstly, find the location of the results
     {% for ci in cookiecutter.phase.algorithm_outputs %}
     {%- set py_slug = ci.slug | replace("-", "_") -%}

grand_challenge_forge/partials/example-evaluation-method/example-evaluation-method{{cookiecutter._}}/helpers.py

@@ -1,6 +1,5 @@
 import multiprocessing
 import os
-import signal
 from concurrent.futures import ProcessPoolExecutor, as_completed
 from multiprocessing import Manager, Process
 
@@ -154,11 +153,3 @@ def _terminate_child_processes():
         os.waitpid(-1, 0)
     except ChildProcessError:
         pass  # No child processes, that if fine
-
-
-def listen_to_children_errors():
-    def handler(*_, **__):
-        print("A child failed, terminating all other children")
-        _terminate_child_processes()
-
-    signal.signal(signal.SIGCHLD, handler)