No longer export CallSubjectDialog am: 1ab4eeb65e am: c1cdeefa61

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Dialer/+/17034410

Change-Id: Ib6a3dfa5d05d4f74d9fce5e47d9c7dbf087c92a6