remove duplicated header set background to event pages

src/app/index/index.module.ts

@@ -1,7 +1,6 @@
 import { NgModule } from '@angular/core';
 import { CommonModule } from '@angular/common';
 import { FormsModule } from '@angular/forms';
-
 import { IonicModule } from '@ionic/angular';
 
 import { IndexPageRoutingModule } from './index-routing.module';
@@ -13,7 +12,7 @@ import { IndexPage } from './index.page';
     CommonModule,
     FormsModule,
     IonicModule,
-    IndexPageRoutingModule
+    IndexPageRoutingModule,
   ],
   declarations: [IndexPage]
 })