Remove unnecessary read check - already done by ListService

app/controllers/projects/issue_links_controller.rb

 module Projects
   class IssueLinksController < ApplicationController
-    before_action :authorize_read_issue_link!
     before_action :authorize_admin_issue_link!, only: [:create, :destroy]
 
     def index
@@ -36,10 +35,6 @@ module Projects
       render_404 unless can?(current_user, :admin_issue_link, @project)
     end
 
-    def authorize_read_issue_link!
-      render_404 unless can?(current_user, :read_issue_link, @project)
-    end
-
     def issue
       @issue ||=
         IssuesFinder.new(current_user, project_id: project.id)