Remove the unused SkCachePreload_arm

Signed-off-by: Kévin PETIT <kevin.petit@arm.com>

BUG=skia:
R=djsollen@google.com, mtklein@google.com

Author: kevin.petit@arm.com

Review URL: https://codereview.chromium.org/263553008

Change-Id: I7312ca230cd98ec335970c4f503b3b04d2ec7db3
git-svn-id: http://skia.googlecode.com/svn/trunk@14456 2bbb7eff-a529-9590-31e7-b0007b416f81
Always inline Filter_32_*_neon functions

The functions are rather performance critical and already marked
'inline'. However, Chrome for Android will not have these functions
inlined due to it being compiled with -Os and a small -finline-limit.

This avoids one call in the filtering functions.

Does not increase the library size.

BUG=chromium:363073
R=mtklein@google.com

Author: kkinnunen@nvidia.com

Review URL: https://codereview.chromium.org/280403005

Change-Id: I3a1191a3b6f0afe8c035ab0af745280883680efc
git-svn-id: http://skia.googlecode.com/svn/trunk@14709 2bbb7eff-a529-9590-31e7-b0007b416f81