Remove chrome/test/install_test, it is no longer used.
BUG=none
NOTRY=true

Review URL: https://codereview.chromium.org/105363003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239627 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239627