refactor: remove unused modules

Author: kastov

prisma/migrations/20251201232425_drop_user_traffic_history/migration.sql

@@ -0,0 +1,5 @@
+-- DropForeignKey
+ALTER TABLE "user_traffic_history" DROP CONSTRAINT "user_traffic_history_user_uuid_fkey";
+
+-- DropTable
+DROP TABLE "user_traffic_history";

prisma/schema.prisma

@@ -76,7 +76,6 @@ model Users {
   updatedAt DateTime @default(dbgenerated("now()")) @updatedAt @map("updated_at")
 
   nodesUserUsageHistory          NodesUserUsageHistory[]
-  userTrafficHistory             UserTrafficHistory[]
   hwidUserDevices                HwidUserDevices[]
   activeInternalSquads           InternalSquadMembers[]
   userSubscriptionRequestHistory UserSubscriptionRequestHistory[]
@@ -262,18 +261,6 @@ model NodesUsageHistory {
   @@map("nodes_usage_history")
 }
 
-model UserTrafficHistory {
-  id        BigInt   @id @default(autoincrement())
-  userUuid  String   @map("user_uuid") @db.Uuid
-  usedBytes BigInt   @map("used_bytes")
-  resetAt   DateTime @default(dbgenerated("now()")) @map("reset_at")
-
-  user Users @relation(fields: [userUuid], references: [uuid], onDelete: Cascade)
-
-  @@index([userUuid])
-  @@map("user_traffic_history")
-}
-
 model Hosts {
   uuid                 String  @id @default(dbgenerated("gen_random_uuid()")) @db.Uuid
   viewPosition         Int     @default(autoincrement()) @map("view_position")

src/modules/remnawave-backend.modules.ts

@@ -9,7 +9,6 @@ import { NodesTrafficUsageHistoryModule } from './nodes-traffic-usage-history/no
 import { NodesUserUsageHistoryModule } from './nodes-user-usage-history/nodes-user-usage-history.module';
 import { SubscriptionTemplateModule } from './subscription-template/subscription-template.module';
 import { SubscriptionSettingsModule } from './subscription-settings/subscription-settings.module';
-import { UserTrafficHistoryModule } from './user-traffic-history/user-traffic-history.module';
 import { NodesUsageHistoryModule } from './nodes-usage-history/nodes-usage-history.module';
 import { RemnawaveSettingsModule } from './remnawave-settings/remnawave-settings.module';
 import { RemnawaveServiceModule } from './remnawave-service/remnawave-service.module';
@@ -44,7 +43,6 @@ import { AuthModule } from './auth/auth.module';
         NodesModule,
         NodesTrafficUsageHistoryModule,
         HostsModule,
-        UserTrafficHistoryModule,
         NodesUserUsageHistoryModule,
         HwidUserDevicesModule,
         NodesUsageHistoryModule,