identity: Remove test to check if Identity Credential is implemented.

This requirement has been punted to Android 14.

Bug: 217197568
Test: N/A
Change-Id: I93f6db2a32a6bf093c1af53e0ae2f4a8a49aca53
(cherry picked from commit 52a6780b)
Merged-In: I93f6db2a32a6bf093c1af53e0ae2f4a8a49aca53