Clean up obsolete exception wrapping

The automatic host removal is not a background job anymore, so the
RuntimeError is misleading.

Change-Id: Iec6783606e65a374346c118061d9171b338b020c

tests/composition/test_automatic_host_removal.py

@@ -71,10 +71,6 @@ def _host_removal_done() -> bool:
             interval=20,
         )
 
-    except Exception as exc:
-        if not central_site.file_exists("var/check_mk/background_jobs/host_removal"):
-            raise RuntimeError("Host removal background job was not even started") from exc
-        raise
     finally:
         central_site.openapi.rules.delete(rule_id=rule_id)
         if unresolvable_host_central in central_site.openapi.hosts.get_all_names():