Fix delete junction batch command

api/command.py

@@ -51,7 +51,7 @@ def execute_delete_command(name: str, cs: ChangeSet) -> ChangeSet:
     type = cs.operations[0]['type']
 
     if type == JUNCTION:
-        return add_junction(name, cs)
+        return delete_junction(name, cs)
     elif type == RESERVOIR:
         return delete_reservoir(name, cs)
     elif type == TANK:

api/operation.py

@@ -55,6 +55,7 @@ def write(name: str, sql: str) -> None:
     with conn[name].cursor() as cur:
         cur.execute(sql)
 
+
 def get_current_operation(name: str) -> int:
     return int(read(name, 'select id from current_operation')['id'])