Revert "Make com_android_i18n namespace visible"

Revert "Make com_android_i18n namespace visible"

Revert submission 1299494-i18nApex

Reason for revert: Breaking aosp_x86-eng on aosp-master
Reverted Changes:
I30fc3735b:Move ICU from ART APEX to i18n APEX
Icb7e98b5c:Calling @IntraCoreApi from core-icu4j should not c...
Ic7de63fe3:Move core-icu4j into I18n APEX
I65b97bdba:Make com_android_i18n namespace visible
Ia4c83bc15:Move v8 and libpac into i18n APEX
I10e6d4948:Move core-icu4j into i18n APEX
I8d989cad7:Move ICU from ART APEX into i18n APEX
I72216ca12:Move ICU into i18n APEX
Ief9dace85:Add shared library into i18n APEX and add the requ...
I7d97a10ba:Move libpac into i18n APEX
I90fff9c55:Move ICU from ART APEX into i18n APEX

Change-Id: I8e170a25fb334c12af5c2fe4a1fb4afafd56d096