Remove library dependencies that are already part of linkeddata

Author: eilmiv

Gemfile

@@ -30,7 +30,6 @@ gem 'jquery-qtip2-wrapper-rails'
 gem 'jquery-rails'
 gem 'jquery-simplecolorpicker-rails'
 gem 'jquery-turbolinks'
-gem 'json-ld'
 gem 'kt-paperclip'
 gem 'linkeddata'
 gem 'maxmind-db'
@@ -45,8 +44,6 @@ gem 'pundit'
 gem 'rack-cors', require: 'rack/cors'
 gem 'rails_admin'
 gem 'rails-i18n'
-gem 'rdf'
-gem 'rdf-rdfxml'
 gem 'recaptcha', require: 'recaptcha/rails'
 gem 'redcarpet'
 gem 'redis'

Gemfile.lock

@@ -851,7 +851,6 @@ DEPENDENCIES
   jquery-rails
   jquery-simplecolorpicker-rails
   jquery-turbolinks
-  json-ld
   kt-paperclip
   linkeddata
   listen
@@ -879,8 +878,6 @@ DEPENDENCIES
   rails-controller-testing
   rails-i18n
   rails_admin
-  rdf
-  rdf-rdfxml
   recaptcha
   redcarpet
   redis