(snuba-deletes): storage_deletes_enabled default enabled (#6331)

Makes the default `storage_deletes_enabled=1`. 

Sentry tests should be testing against this feature. In production all
regions except S4S have this set to `0`. Additionally, only the
`search_issues` dataset has deletes enabled in the storage
configuration.

snuba/web/delete_query.py

@@ -125,7 +125,7 @@ def _delete_from_table(
 
 
 def deletes_are_enabled() -> bool:
-    return bool(get_config("storage_deletes_enabled", 0))
+    return bool(get_config("storage_deletes_enabled", 1))
 
 
 def _get_rows_to_delete(

tests/test_search_issues_api.py

@@ -198,7 +198,6 @@ def test_bad_delete(self) -> None:
         assert "'query' is a required property" in res.get_json()["error"]["message"]
 
         # test for invalid column types
-        set_config("storage_deletes_enabled", 1)
         res = self.app.delete(
             "/search_issues/",
             data=json.dumps(