Fix ICU data file for Android

In some locales, currency data turns empty after currency list filtering
on Android. This leads v8's currency formatter to fall back to 3-letter
currency code instead of currency symbol (e.g. 'GBP' in en-GB).

Fix the ICU data trimming script to remove an empty Currency block after
filtering and rebuild ICU data files.

Bug: 870338
Test: See the bug
TBR=gsathya@chromium.org
Change-Id: Idf7af0a5f00b05b7f26d2ad42b21abd1aca47d07
Reviewed-on: https://chromium-review.googlesource.com/1184505
Reviewed-by: Jungshik Shin <jshin@chromium.org>
6 files changed