This reverts commit ce6f6da1587615240b7cd2582209c6838cb3bec8.
Reason for revert: Due to b/194243206, TTY shall keep supporting for WCDMA/GSM devcie. Thus revert this CL for pixel 2021 and after.
Bug:194243206
Test: b/194243206#comment22
Change-Id: I650eb50a12bebcd55d04a4ab18bf1d78480a0af5