Minor cleanup: Don't generate ash_resources_map, they're not used.

BUG=297672
R=ajwong@chromium.org
TBR=oshima

Review URL: https://codereview.chromium.org/100483011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242847 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242847