Remove SkPARAM and SkDECLAREPARAM.

These were used for debug only parameters, but no longer appear in any
code.

Change-Id: I91a25f0b40df02a66b0d7543339deafbf28dc06d
Reviewed-on: https://skia-review.googlesource.com/35703
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
1 file changed