Revert "Make SkRemoteGlyphCache obey the prepareForDrawing contract"

This reverts commit 4e045301f186d48b19b351565928c0614d10478a.

Reason for revert: Breaks unit test for Windows 10 all native fonts

Original change's description:
> Make SkRemoteGlyphCache obey the prepareForDrawing contract
> 
> Change-Id: I3f781b8d72f460edb73c5b3d446676db19a4a935
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/215090
> Commit-Queue: Herb Derby <herb@google.com>
> Reviewed-by: Khushal Sagar <khushalsagar@chromium.org>

TBR=herb@google.com,khushalsagar@chromium.org,khushalsagar@google.com

Change-Id: Ia4207104d97d1cc6d2cc058eb1e938f7239f1bb5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/215166
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Herb Derby <herb@google.com>
2 files changed