Clean up global gSkSuppressFontCachePurgeSpew.
No one is using it except to flick it to true to shut up the spew,
but the spew is already guarded by #ifdef SPEW_PURGE_STATUS. Let's
leave it to SPEW_PURGE_STATUS.
Noticed this specificially when TSAN complained about FontScalerBench
modifying it in a thread-unsafe way.
BUG=skia:1792
R=reed@google.com, mtklein@google.com
Author: mtklein@chromium.org
Review URL: https://codereview.chromium.org/264333008
git-svn-id: http://skia.googlecode.com/svn/trunk@14697 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed