Remove calls to computeOutputColor- Type and Space

Bug: b/70846442
Test: I5110881203c000474116a94a48f2afc9a9b62001

These methods were already called by the client. The client may have
further overridden the SkColorType (and therefore the SkColorSpace), so
respect their final decision on both.

Change-Id: Iddcf618e474784b0a000fd516250c44285dacc6b
Reviewed-on: https://skia-review.googlesource.com/114062
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
3 files changed