Revert 254047 "Cast: Add a unit test for connect to an invalid r..."

Test times out on mac builders.

> Cast: Add a unit test for connect to an invalid receiver
> 
> This test ensures that the status callback is called if there is a
> socket error.
> 
> BUG=345929
> 
> Review URL: https://codereview.chromium.org/180333003

TBR=hclam@chromium.org

Review URL: https://codereview.chromium.org/184243002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254060 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254060