Added simple feature to remove screenshots

app/controllers/packages_controller.rb

@@ -74,6 +74,13 @@ class PackagesController < ApplicationController
     redirect_to upload_package_by_name_path
   end
 
+  def delete_screenshot
+    @screenshot = Screenshot.find_by(id: params[:id])
+    @screenshot.destroy
+
+    redirect_to upload_package_by_name_path
+  end
+
   private
 
   #def user_params