Remove rerun since it's not used anymore

Signed-off-by: Rémy Coutable <remy@rymai.me>

Gemfile

@@ -255,7 +255,6 @@ group :development do
   gem 'brakeman', '~> 3.3.0', require: false
 
   gem 'letter_opener_web', '~> 1.3.0'
-  gem 'rerun', '~> 0.11.0'
   gem 'bullet', '~> 5.2.0', require: false
   gem 'rblineprof', '~> 0.3.6', platform: :mri, require: false
   gem 'web-console', '~> 2.0'

Gemfile.lock

@@ -407,9 +407,6 @@ GEM
       xml-simple
     licensee (8.0.0)
       rugged (>= 0.24b)
-    listen (3.0.5)
-      rb-fsevent (>= 0.9.3)
-      rb-inotify (>= 0.9)
     little-plugger (1.1.4)
     logging (2.1.0)
       little-plugger (~> 1.1)
@@ -580,9 +577,6 @@ GEM
     rainbow (2.1.0)
     raindrops (0.17.0)
     rake (10.5.0)
-    rb-fsevent (0.9.6)
-    rb-inotify (0.9.5)
-      ffi (>= 0.5.0)
     rblineprof (0.3.6)
       debugger-ruby_core_source (~> 1.3)
     rdoc (4.2.2)
@@ -611,8 +605,6 @@ GEM
     redis-store (1.2.0)
       redis (>= 2.2)
     request_store (1.3.1)
-    rerun (0.11.0)
-      listen (~> 3.0)
     responders (2.3.0)
       railties (>= 4.2.0, < 5.1)
     rest-client (2.0.0)
@@ -968,7 +960,6 @@ DEPENDENCIES
   redis-namespace (~> 1.5.2)
   redis-rails (~> 5.0.1)
   request_store (~> 1.3)
-  rerun (~> 0.11.0)
   responders (~> 2.0)
   rouge (~> 2.0)
   rqrcode-rails3 (~> 0.1.7)

lib/tasks/dev.rake

@@ -7,9 +7,4 @@ namespace :dev do
     Rake::Task["gitlab:setup"].invoke
     Rake::Task["gitlab:shell:setup"].invoke
   end
-
-  desc 'GitLab | Start/restart foreman and watch for changes'
-  task :foreman => :environment do
-    sh 'rerun --dir app,config,lib -- foreman start'
-  end
 end