Remove browser gem as it is no longer needed

Gemfile

@@ -4,7 +4,6 @@ source 'https://rubygems.org'
 
 gem 'bcrypt'
 gem 'bootstrap-will_paginate'
-gem 'browser'
 gem 'carrierwave'
 gem 'charlock_holmes', require: 'charlock_holmes/string'
 gem 'docker-api', require: 'docker'

Gemfile.lock

@@ -87,7 +87,6 @@ GEM
       msgpack (~> 1.2)
     bootstrap-will_paginate (1.0.0)
       will_paginate
-    browser (5.3.1)
     builder (3.2.4)
     bunny (2.22.0)
       amq-protocol (~> 2.3, >= 2.3.1)
@@ -536,7 +535,6 @@ DEPENDENCIES
   binding_of_caller
   bootsnap
   bootstrap-will_paginate
-  browser
   capybara
   carrierwave
   charlock_holmes