removed banner image from events schema

Author: akshit1003

prisma/migrations/20250809180236_/migration.sql

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

prisma/schema.prisma

@@ -69,7 +69,6 @@ model Event {
   created_at      DateTime   @default(now())
   start_date_time DateTime
   end_date_time   DateTime?
-  bannerImage     String?
 
   hostId String
   host   User   @relation("HostEvents", fields: [hostId], references: [id])