Removing some Windows binaries from the start of time.

If things break, we'll revert this, but Mark and I can't find find anything
using them and they don't really belong here.
Review URL: http://codereview.chromium.org/7650013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96783 0039d316-1c4b-4281-b951-d872f2087c98

chrome/tools/README.chromium

-optipng.exe: v.0.5.5, under zlib/libpng license. Sources available at http://optipng.sourceforge.net/
-
-Sample use: (while in trunk/)
-  for /r %a in (*.png) do @chrome\tools\optipng -o7 %a