Remove MSVC_SUPPRESS_WARNING
Remove MSVC_SUPPRESS_WARNING

It's never as useful as it seems like it should be and it's removed from
Chromium now.

Upstreaming of
https://chromium-review.googlesource.com/c/chromium/src/+/1290574/.

Change-Id: Iac34e166f785074e91c19ece996e7c2e90db8249
Reviewed-on: https://chromium-review.googlesource.com/c/1291749
Reviewed-by: Scott Graham <e134406e1863f3b48b0795831afac5c0595efb36@chromium.org>

chromium/mini_chromium,chromium/mini_chromium,chromium/mini_chromium