Remove SkFontMgr_New_DirectWriteRenderer impl

No one is using it. This needs to be removed from SkFontMgr_win_dw.cpp
before deleting the other files to keep Chromium building. Chromium is
currently building the related files even though it isn't using them.

Change-Id: Ifa64ae229020285a77b30af074cbbf652ea682b8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/841796
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
1 file changed