[Frontend][Core] Revert "Add shutdown timeout" (#34730 and #36270) (#36628)

Signed-off-by: Mark McLoughlin <markmc@redhat.com>

tests/entrypoints/test_api_server_process_manager.py

@@ -79,7 +79,7 @@ def test_api_server_process_manager_init(api_server_args, with_stats_update):
     finally:
         # Always clean up the processes
         print("Cleaning up processes...")
-        manager.shutdown()
+        manager.close()
 
         # Give processes time to terminate
         time.sleep(0.2)
@@ -111,8 +111,6 @@ def test_wait_for_completion_or_failure(api_server_args):
                 wait_for_completion_or_failure(api_server_manager=manager)
             except Exception as e:
                 result["exception"] = e
-            finally:
-                manager.shutdown()
 
         # Start a thread to run wait_for_completion_or_failure
         wait_thread = threading.Thread(target=run_with_exception_capture, daemon=True)
@@ -145,7 +143,7 @@ def test_wait_for_completion_or_failure(api_server_args):
             assert not proc.is_alive(), f"Process {i} should not be alive"
 
     finally:
-        manager.shutdown()
+        manager.close()
         time.sleep(0.2)
 
 
@@ -176,14 +174,11 @@ def test_normal_completion(api_server_args):
         # since all processes have already
         # terminated, it should return immediately
         # with no error
-        try:
-            wait_for_completion_or_failure(api_server_manager=manager)
-        finally:
-            manager.shutdown()
+        wait_for_completion_or_failure(api_server_manager=manager)
 
     finally:
         # Clean up just in case
-        manager.shutdown()
+        manager.close()
         time.sleep(0.2)
 
 
@@ -206,7 +201,7 @@ def test_external_process_monitoring(api_server_args):
         def __init__(self, proc):
             self.proc = proc
 
-        def shutdown(self):
+        def close(self):
             if self.proc.is_alive():
                 self.proc.terminate()
                 self.proc.join(timeout=0.5)
@@ -231,9 +226,6 @@ def test_external_process_monitoring(api_server_args):
                 )
             except Exception as e:
                 result["exception"] = e
-            finally:
-                manager.shutdown()
-                mock_coordinator.shutdown()
 
         # Start a thread to run wait_for_completion_or_failure
         wait_thread = threading.Thread(target=run_with_exception_capture, daemon=True)
@@ -267,6 +259,6 @@ def test_external_process_monitoring(api_server_args):
 
     finally:
         # Clean up
-        manager.shutdown()
-        mock_coordinator.shutdown()
+        manager.close()
+        mock_coordinator.close()
         time.sleep(0.2)