Chris Bracken 9bf86f9b6a Win: Remove WinRT headers, Windows SDK, cppwinrt (flutter/engine#33030)
WinRT was only ever used by the Windows UWP embedder since the main
Windows embedder supports compatibility with Windows 7 and WinRT
requires a Windows SDK target version of at least 10.0.17134.0 (Windows
10, version 1803).

When, at some point, we drop support for versions of Windows earlier
than Windows 10, we'll almost certainly want to resurrect this and start
using WinRT in the main Windows embedder.

The Windows UWP embedder was removed in:
https://github.com/flutter/engine/pull/33019

Issue: flutter/flutter#102172
2022-04-30 12:08:18 -07:00
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