Remove ICU check from subset_harfbuzz

The Skia build of HarfBuzz does not use ICU, so there is no need to
initialize it. If a user uses a HarfBuzz build which does use ICU, they
will need enuse that ICU is initialized in their own way.

Change-Id: I89bd518dbf3c58aaaee2463a26d6402738dfbf97
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/453140
Reviewed-by: Julia Lavrova <jlavrova@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
1 file changed