[Settings] Code refactor - remove unused import lines

Remove some unused import lines within source code based on
https://source.android.com/setup/contribute/code-style

Bug: 182867979
Test: build pass
Change-Id: I76dbcfa9e5b435b2838401dfee15b12f472d07d0

src/com/android/settings/network/ims/ImsQueryTtyOnVolteStat.java

@@ -19,7 +19,6 @@ package com.android.settings.network.ims;
 import android.telephony.ims.ImsMmTelManager;
 import android.util.Log;
 
-
 /**
  * An {@link ImsQuery} for accessing IMS tty on VoLte stat
  */