Remove cssmapplePriv.h

The symbols in this header are no longer used, as of
https://chromium-review.googlesource.com/c/chromium/src/+/3649371.

Bug: 1322548, 590914
Change-Id: Ibeedd3b860215034e57a42179f3047cb210b9341
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3652436
Commit-Queue: David Benjamin <davidben@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
Auto-Submit: David Benjamin <davidben@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1004297}
NOKEYCHECK=True
GitOrigin-RevId: 3166e4253af248658b0605d475c538545b5776dd
2 files changed