refactor(db): remove active column in Warning table

prisma/migrations/20240104124342_remove_active_in_warning/migration.sql

@@ -0,0 +1,8 @@
+/*
+  Warnings:
+
+  - You are about to drop the column `active` on the `Warning` table. All the data in the column will be lost.
+
+*/
+-- AlterTable
+ALTER TABLE "Warning" DROP COLUMN "active";

prisma/schema.prisma

@@ -256,7 +256,6 @@ model Warning {
   mod    User     @relation("warnMod", fields: [modId], references: [id])
   modId  String
   time   DateTime @default(now())
-  active Boolean  @default(true)
   note   String
 }