fix(charts): remove malfunctioning SCALE migration script

charts/stable/leaf2mqtt/Chart.yaml

@@ -22,7 +22,7 @@ name: leaf2mqtt
 sources:
 - https://github.com/mitsumaui/leaf2mqtt
 - https://github.com/k8s-at-home/container-images
-version: 4.0.0
+version: 4.0.1
 annotations:
   truecharts.org/catagories: |
     - media

charts/stable/leaf2mqtt/SCALE/migrations/migrate

@@ -1,21 +0,0 @@
-#!/usr/bin/python3
-import json
-import os
-import sys
-
-
-def migrate(values):
-    values.update({
-        **({'secretEnv': values['secret']} if values.get('secret') else {}),
-        **({'secret': {}} if values.get('secret'))
-    })
-    return values
-
-
-if __name__ == '__main__':
-    if len(sys.argv) != 2:
-        exit(1)
-
-    if os.path.exists(sys.argv[1]):
-        with open(sys.argv[1], 'r') as f:
-            print(json.dumps(migrate(json.loads(f.read()))))