Revert "Cache hb_face."

This reverts commit d19bb17782d09e7fe2f7ea85eabf7e649e6becc1.

Reason for revert: windows build failure?
lld-link: error: undefined symbol: private: void __cdecl SkSemaphore::osSignal(int)


Original change's description:
> Cache hb_face.
> 
> Creating an hb_face can be quite expensive, cache them.
> 
> This implementation is similar to the super simple caching strategy used
> by libtxt. It uses a simple global LRU cache from SkFontID to hb_hbface
> of size 100.
> 
> Change-Id: I364a4548699cece50073e829a065c0a303245873
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/289442
> Commit-Queue: Ben Wagner <bungeman@google.com>
> Reviewed-by: Mike Reed <reed@google.com>

TBR=bungeman@google.com,reed@google.com

Change-Id: I31967a638fb497f28ca3d3f26ef3692dddff004d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/290718
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
1 file changed