Revert "Revert "Remove the system API of getCarrierBandwidth()""

This reverts commit 4606a92b21745d90ac3ff4099c940cac71a89dcf.

Reason for revert: <This CL doesn't break error prone build. Will redo the CTS one which does break the build>

Change-Id: Icdb035bcc65195ce6bd6b80013f14eb879e797a8
1 file changed