remove authorization for LearningObjectsController#show requests

app/controllers/v1/learning_objects_controller.rb

@@ -9,7 +9,7 @@ class V1::LearningObjectsController < ApplicationController
 
   before_action :authenticate_user!, except: [:index, :show]
   before_action :set_learning_object, only: [:show, :update, :destroy]
-  before_action :authorize!, only: [:show, :update, :destroy]
+  before_action :authorize!, only: [:update, :destroy]
 
   def index
     limit = params[:limit] || 10