Stop doing at-exit cleanup of lazy pointers.

There are only a fixed number of them, and we're already intentionally leaking in Release.

CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu13.10-GCE-NoGPU-x86_64-Debug-ASAN-Trybot

BUG=skia:2940

Review URL: https://codereview.chromium.org/606013004
1 file changed