Remove extra empty lines

Author: febus982

src/alembic/script.py.mako

@@ -25,21 +25,17 @@ def upgrade(engine_name: str) -> None:
 
 def downgrade(engine_name: str) -> None:
     globals()[f"downgrade_{engine_name}"]()
-
 <%
     db_names = config.get_main_option("databases")
 %>
-
 ## generate an "upgrade_<xyz>() / downgrade_<xyz>()" function
 ## for each database name in the ini file.
 
 % for db_name in re.split(r',\s*', db_names):
-
 def upgrade_${db_name}() -> None:
     ${context.get(f"{db_name}_upgrades", "pass")}
 
 
 def downgrade_${db_name}() -> None:
     ${context.get(f"{db_name}_downgrades", "pass")}
-
 % endfor