Refactor code structure for improved readability and maintainability

custom/Espo/Custom/Resources/metadata/entityDefs/CMietinkasso.json

@@ -52,48 +52,6 @@
                 "tooltipText"
             ]
         },
-        "advowareAktenzeichen": {
-            "type": "varchar",
-            "required": false,
-            "maxLength": 100,
-            "tooltip": true,
-            "isCustom": true,
-            "copyToClipboard": true
-        },
-        "aktennr": {
-            "type": "int",
-            "required": false,
-            "tooltip": true,
-            "isCustom": true
-        },
-        "advowareLastSync": {
-            "type": "datetime",
-            "required": false,
-            "readOnly": true,
-            "tooltip": true,
-            "isCustom": true
-        },
-        "syncStatus": {
-            "type": "enum",
-            "required": false,
-            "options": [
-                "pending_sync",
-                "clean",
-                "unclean",
-                "failed",
-                "no_sync"
-            ],
-            "style": {
-                "pending_sync": "default",
-                "clean": "success",
-                "unclean": "warning",
-                "failed": "danger",
-                "no_sync": null
-            },
-            "default": "no_sync",
-            "tooltip": true,
-            "isCustom": true
-        },
         "gerichtsrubrum": {
             "type": "text",
             "required": false,