Remove libcore.icu.TimeZoneNames.forLocale usage

Remove usage of libcore.icu.TimeZoneNames.forLocale(Locale)
so it can be removed. This is the last user. Instead, an
equivalent method is used from the TimeZoneFinder class.

Bug: 36971201
Test: Build, boot, manual use of time zone settings picker.
Change-Id: I2645974f404c08aaecf13476ca022d07535f9b96
1 file changed