Remove host target of ICU on Android

Previously host target of ICU is required on Android because ImageDiff
depends on WTF and in turn on icu. WTF dependency of ImageDiff has been
removed in https://bugs.webkit.org/show_bug.cgi?id=88147.

BUG=none
TEST=none
Review URL: https://chromiumcodereview.appspot.com/10491006/



git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/icu46@140144 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
1 file changed