Fix ping TypeError when killing the process (#157794)

homeassistant/components/ping/helpers.py

@@ -162,7 +162,7 @@ class PingDataSubProcess(PingData):
 
             if pinger:
                 with suppress(TypeError, ProcessLookupError):
-                    await pinger.kill()  # type: ignore[func-returns-value]
+                    pinger.kill()
                 del pinger
 
             return None

tests/components/ping/test_helpers.py

@@ -22,7 +22,7 @@ class MockAsyncSubprocess:
         """Fails immediately with a timeout."""
         raise TimeoutError
 
-    async def kill(self) -> None:
+    def kill(self) -> None:
         """Raise preset exception when called."""
         raise self.killsig