Revert r113657 "win_release_OmitFramePointers=0 must explicitly pass /Oy-"

We are suspecting this has side effects on official builds.

If so, this is a configuration error. Trying out to be sure.

TBR=timurrrr@chromium.org
BUG=
TEST=

Review URL: http://codereview.chromium.org/8898023

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@114251 0039d316-1c4b-4281-b951-d872f2087c98

build/common.gypi

@@ -1493,12 +1493,6 @@
               }],
               ['win_release_OmitFramePointers==0', {
                 'OmitFramePointers': 'false',
-                # The above is not sufficient (http://crbug.com/106711): it
-                # simply eliminates an explicit "/Oy", but both /O2 and /Ox
-                # perform FPO regardless, so we must explicitly disable.
-                # We still want the false setting above to avoid having
-                # "/Oy /Oy-" and warnings about overriding.
-                'AdditionalOptions': ['/Oy-'],
               }],
             ],
           },