Delete sublime-text3.rb (#2218)

Now the default in the main repo.

Casks/sublime-text3.rb

@@ -1,29 +0,0 @@
-cask 'sublime-text3' do
-  version '3114'
-  sha256 '876d4e878ae00ae0c609d561e0fda0e200c8043d8bd53d4a5b22bae4339b7df7'
-
-  url "https://download.sublimetext.com/Sublime%20Text%20Build%20#{version}.dmg"
-  appcast 'https://www.sublimetext.com/updates/3/stable/appcast_osx.xml',
-          checkpoint: '9ba5c20ba4865329217cf88ef4e82cbebab1eae4d9f0af480052e93328da8f5a'
-  name 'Sublime Text'
-  homepage 'https://www.sublimetext.com/3'
-  license :closed
-
-  conflicts_with cask: 'caskroom/versions/sublime-text-dev'
-
-  app 'Sublime Text.app'
-  binary "#{appdir}/Sublime Text.app/Contents/SharedSupport/bin/subl"
-
-  uninstall quit: 'com.sublimetext.3'
-
-  zap delete: [
-                '~/Library/Application Support/Sublime Text 3',
-                '~/Library/Caches/com.sublimetext.3',
-                '~/Library/Preferences/com.sublimetext.3.plist',
-                '~/Library/Saved Application State/com.sublimetext.3.savedState',
-              ]
-
-  caveats do
-    files_in_usr_local
-  end
-end