Remove SK_USE_SCALED_FONTMETRICS.

Remove SK_USE_SCALED_FONTMETRICS.

This define was added in
"SK_USE_SCALED_FONTMETRICS for correct scaling"
c17c6582ec0b7bc211d7de9e8d634692d239c123.
Users all now define this flag, so it may now be removed.

BUG=chromium:420901
Committed: https://skia.googlesource.com/skia/+/6fee786210bd2f9ef8d5d570530b05ef6cb02fa1

[bungeman-skia, 2014-11-12 15:11:11]

bungeman@google.com changed reviewers:
+ reed@google.com

[bungeman-skia, 2014-11-12 15:15:54]

The CQ bit was checked by bungeman@google.com

[commit-bot: I haz the power, 2014-11-12 15:16:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/720743003/1

[commit-bot: I haz the power, 2014-11-12 15:16:34]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from valid reviewer(s) till 2014-11-12 21:16 UTC

[bungeman-skia, 2014-11-12 15:23:58]

The CQ bit was unchecked by bungeman@google.com

[reed1, 2014-11-12 16:28:45]

The CQ bit was checked by reed@google.com

[reed1, 2014-11-12 16:28:47]

lgtm

[commit-bot: I haz the power, 2014-11-12 16:29:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/720743003/1

[commit-bot: I haz the power, 2014-11-12 16:29:31]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/6fee786210bd2f9ef8d5d570530b05ef6cb02fa1