Remove opaque versions of Color32_D565

Removes the opaque-only versions of this function from the factory since
they will never be used. Opaque source colors are handled in
SkRGB16_Opaque_Blitter instead, which doesn't use the factory function.

Signed-off-by: Henrik Smiding <henrik.smiding@intel.com>

Review URL: https://codereview.chromium.org/901593002
2 files changed