Fix Feature Category in Tags Controller

This commit fixes that the specific endpoint
on tags controller is categorized in source code management.

app/controllers/projects/tags_controller.rb

@@ -10,8 +10,7 @@ class Projects::TagsController < Projects::ApplicationController
   before_action :authorize_download_code!
   before_action :authorize_admin_tag!, only: [:new, :create, :destroy]
 
-  feature_category :source_code_management, [:index, :show, :new, :destroy]
-  feature_category :release_evidence, [:create]
+  feature_category :source_code_management
 
   # rubocop: disable CodeReuse/ActiveRecord
   def index