Remove Dr. Memory suppressions no longer needed with floating-point uninitialized read fix now in.

TBR=zhaoqin@chromium.org
BUG=http://code.google.com/p/drmemory/issues/detail?id=471

Review URL: https://codereview.chromium.org/137223003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246899 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 246899