Revert "Revert "SkUserConfig.h: remove out-of-date comment on SK_SFNTLY_SUBSETTER""

Revert "Revert "SkUserConfig.h: remove out-of-date comment on SK_SFNTLY_SUBSETTER""

This reverts commit 156a749eb15d18539a58436d767e9401de413eb3.

Reason for revert: Reverting this makes it much easier to test the merge_into_android.py script. I also stopped the Android autoroller for now.

Original change's description:
> Revert "SkUserConfig.h: remove out-of-date comment on SK_SFNTLY_SUBSETTER"
>
> This reverts commit 68fc549e840d1efc6285c301da1bf52c04e57e0a.
>
> Reason for revert: Breaking the Android roll.
>
> (The change is fine, but the script for merging did not consider that we might edit this file. We can reland this after we update the script.)
>
> Original change's description:
> > SkUserConfig.h: remove out-of-date comment on SK_SFNTLY_SUBSETTER
> >
> > Change-Id: I6894fe43de071999e4923e1515a951b73e2ba0b1
> > Reviewed-on: https://skia-review.googlesource.com/7619
> > Reviewed-by: Ben Wagner <bungeman@google.com>
> > Commit-Queue: Hal Canary <halcanary@google.com>
> >
>
> TBR=halcanary@google.com,bungeman@google.com,reed@google.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
>
> Change-Id: Ib1a2c9faa79d1186705d87c5e17f20fe49b82bb1
> Reviewed-on: https://skia-review.googlesource.com/7641
> Reviewed-by: Leon Scroggins <scroggo@google.com>
> Commit-Queue: Leon Scroggins <scroggo@google.com>
>

TBR=mtklein@chromium.org,halcanary@google.com,bungeman@google.com,scroggo@google.com,reed@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: Ifa42e4fb48bbe9dac40c57cf09cf9586ca86c6df
Reviewed-on: https://skia-review.googlesource.com/7649
Commit-Queue: Ravi Mistry <rmistry@google.com>
Reviewed-by: Ravi Mistry <rmistry@google.com>