covering this doesn't make sense, will never "downgrade" to empty db

ui/medashare/alembic/versions/afad01589b76_initial_db_schema.py

@@ -52,7 +52,7 @@ def upgrade() -> None:
     # ### end Alembic commands ###
 
 
-def downgrade() -> None:
+def downgrade() -> None: # pragma: no cover
     # ### commands auto generated by Alembic - please adjust! ###
     op.drop_table('uuidv5_index')
     op.drop_table('metadata_objects')