refactor: remove unused fields from subscription schema and TypeScript definitions

- Deleted the 'referralCode', 'subscription', 'referralCount', and 'referredBy' fields from the subscription schema to streamline the data model.
- Updated TypeScript definitions to reflect these changes, ensuring type safety and consistency across the application.

src/api/subscription/content-types/subscription/schema.json

@@ -31,31 +31,11 @@
       "required": true,
       "default": false
     },
-    "referralCode": {
-      "type": "string",
-      "required": true,
-      "unique": true
-    },
-    "subscription": {
-      "type": "relation",
-      "relation": "oneToOne",
-      "target": "api::subscription.subscription"
-    },
-    "referralCount": {
-      "type": "integer",
-      "required": true,
-      "default": 0
-    },
     "subscriptionHistories": {
       "type": "relation",
       "relation": "oneToMany",
       "target": "api::subscription-history.subscription-history",
       "mappedBy": "subscription"
-    },
-    "referredBy": {
-      "type": "relation",
-      "relation": "oneToOne",
-      "target": "api::subscription.subscription"
     }
   }
 }

types/generated/contentTypes.d.ts

@@ -772,20 +772,6 @@ export interface ApiSubscriptionSubscription
     > &
       Schema.Attribute.Private;
     publishedAt: Schema.Attribute.DateTime;
-    referralCode: Schema.Attribute.String &
-      Schema.Attribute.Required &
-      Schema.Attribute.Unique;
-    referralCount: Schema.Attribute.Integer &
-      Schema.Attribute.Required &
-      Schema.Attribute.DefaultTo<0>;
-    referredBy: Schema.Attribute.Relation<
-      'oneToOne',
-      'api::subscription.subscription'
-    >;
-    subscription: Schema.Attribute.Relation<
-      'oneToOne',
-      'api::subscription.subscription'
-    >;
     subscriptionHistories: Schema.Attribute.Relation<
       'oneToMany',
       'api::subscription-history.subscription-history'