Remove hack to register atexit handler

setup.cfg

@@ -53,7 +53,7 @@ where=src
 testing =
     pytest
     pytest-cov
-    coverage>=5.0
+    coverage>=7.6.0
 
 docs =
     Sphinx>=1.8.1

tests/test_functional.py

@@ -29,22 +29,9 @@ def emit(self, record):
 def start_server(app, svr, queue, **kwargs):  # pragma: no cover
     """Run a fixture application."""
     logging.getLogger("waitress").addHandler(NullHandler())
-    try_register_coverage()
     svr(app, queue, **kwargs).run()
 
 
-def try_register_coverage():  # pragma: no cover
-    # Hack around multiprocessing exiting early and not triggering coverage's
-    # atexit handler by always registering a signal handler
-
-    if "COVERAGE_PROCESS_START" in os.environ:
-
-        def sigterm(*args):
-            sys.exit(0)
-
-        signal.signal(signal.SIGTERM, sigterm)
-
-
 class FixtureTcpWSGIServer(server.TcpWSGIServer):
     """A version of TcpWSGIServer that relays back what it's bound to."""