Removing unused instance variable (#16826)

```shell ❯ rg "@notifications_index" ``` The above shell command exits status code 1, which means there are no results found. This relates to exploratory work for forem/forem#16821
2022-03-08 13:59:08 -05:00 · 2022-03-08 13:59:08 -05:00 · 4db3e38174
commit 4db3e38174
parent 9ebc039baa
1 changed files with 0 additions and 1 deletions
--- a/app/controllers/notifications_controller.rb
+++ b/app/controllers/notifications_controller.rb
@ -5,7 +5,6 @@ class NotificationsController < ApplicationController
  def index
    return unless user_signed_in?

-    @notifications_index = true
    @user = user_to_view

    @initial_page_size = 8