Remove Linux host setup wizard and libwebkitgtk dependency.

remoting/resources/string_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <grit base_dir="." current_release="1" enc_check="möl" latest_public_release="0" source_lang_id="en">
   <outputs>
     <output filename="remoting/base/string_resources.h" type="rc_header">
       <emit emit_type="prepend"/>
     </output>
     <output filename="remoting/resources/en-US.pak" lang="en" type="data_package"/>
     <output filename="remoting/webapp/_locales/en/messages.json" lang="en" type="chrome_messages_json"/>
     <output filename="remoting/resources/ar.pak" lang="ar" type="data_package"/>
@@ skipping 495 matching lines @@
       </message>
       <message desc="The tool-tip shown when the user hovers over the 'rename host' button. Clicking this button allows the host name to be edited in-place." name="IDR_TOOLTIP_RENAME">
         Edit computer name
       </message>
       <message desc="Message displayed at the bottom of the host screen if local policy dictates that NAT traversal is disabled, meaning that connections outside the local network will not work." name="IDR_WARNING_NAT_DISABLED">
         NOTE: Policy settings permit connections only between computers within your network.
       </message>
       <message desc="Help link displayed when the user enables the host on this computer. Clicking this link opens a page that explains why this operation is safe. This string appears in a UI with limited horizontal space. Please try to keep translations no more than about 30 characters." name="IDR_WHY_IS_THIS_SAFE">
         Why is this safe?
       </message>
-
-      <message name="IDR_HOST_NOT_STARTED" desc="Message displayed when the current computer is not accepting remote connections, instructing the user how to enable them.">
-        Remote access to this computer is disabled.
-      </message>
     </messages>
   </release>
 </grit>