Update snapshot.py

Author: ForeverAngry

pyiceberg/table/update/snapshot.py

@@ -84,10 +84,6 @@
 from pyiceberg.utils.concurrent import ExecutorFactory
 from pyiceberg.utils.properties import property_as_bool, property_as_int
 
-if TYPE_CHECKING:
-    pass
-
-
 from pyiceberg.table.metadata import Snapshot, TableMetadata
 
 
@@ -910,4 +906,4 @@ def expire_snapshot_by_id(self, snapshot_id: int) -> ExpireSnapshots:
 
         self._snapshot_ids_to_expire.add(snapshot_id)
 
-        return self
+        return self