[Testing] Use AndroidJUnit4 instead in telephony/cdma/ test files am: fbb61ba4d0 am: d64a350d86

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Settings/+/1614987

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: If7cde36e5bc7ca5b0899915eaaaf04c0dd974f22