Revert of Enabling ico decoding with use of png and bmp decoders (patchset #10 id...

Revert of Enabling ico decoding with use of png and bmp decoders (patchset #10 id:280001 of https://codereview.chromium.org/1011343003/)

Reason for revert:
Reverting on suspicion of massive bot failures - possible command line too long?

Original issue's description:
> Enabling ico decoding with use of png and bmp decoders
>
> BUG=skia:3257
>
> Committed: https://skia.googlesource.com/skia/+/15bfd075d38e4422a477e22940d06a137f66cc97

TBR=scroggo@google.com,reed@google.com,djsollen@google.com,msarett@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:3257

Review URL: https://codereview.chromium.org/1022843005