Revert "Add support for building in Flutter Windows UWP configuration" This reverts commit 68ac4e43aa67c4bac9df639d80079648ea86dbe9. Reason for revert: Crashes Chrome GPU process startup on Windows x86 See crbug.com/1168272 Original change's description: > Add support for building in Flutter Windows UWP configuration > > Bug: angleproject:5527 > Change-Id: Idf5a4cbb6f84b24fa2448157cab1b6a3bce4d8be > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2620580 > Reviewed-by: Jamie Madill <jmadill@chromium.org> > Commit-Queue: Jamie Madill <jmadill@chromium.org> TBR=geofflang@chromium.org,stuart.morgan@gmail.com,jmadill@chromium.org,james@clarkezone.io # Not skipping CQ checks because original CL landed > 1 day ago. Tbr: jmadill@chromium.org Bug: angleproject:5527, chromium:1168272 Change-Id: Ifb37c8026253c6a7c334d5b6c83018c888a9f51c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2638572 Commit-Queue: Austin Eng <enga@chromium.org> Reviewed-by: Austin Eng <enga@chromium.org>