DEV: Remove development cache-buster query parameter (#17444)

All our development-mode assets serve a `Cache-Control: no-cache` header, so a query parameter shouldn't be needed. Ember CLI does not include cache-busting parameters, so this change will move the development rails app to the same behaviour.

This will fix adding persistent breakpoints in the dev tools. Previously, the browser would think that the assets have been replaced and throw away the breakpoints.

app/helpers/application_helper.rb

@@ -125,13 +125,6 @@ module ApplicationHelper
       path = path.gsub("#{GlobalSetting.cdn_url}/assets/", "#{GlobalSetting.cdn_url}/brotli_asset/")
     end
 
-    if Rails.env == "development"
-      if !path.include?("?")
-        # cache breaker for mobile iOS
-        path = path + "?#{Time.now.to_f}"
-      end
-    end
-
     path
   end