Remove another spurious assert in skip_sgr
Remove another spurious assert in skip_sgr

Fixes some tests.

Change-Id: Ice2a9e1a57574a3c4393014263bfd1aedc96e4e4

GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom