Remove vestigal traces of the TLS Cached Info Extension support

Chrome no longer carries the patch to NSS to enable this support; remove the
traces that exist in Chrome to support it.

BUG=none
R=wtc
TBR=brettw

Review URL: https://codereview.chromium.org/122573004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244285 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 244285