Remove unused SmsManager API.

This API can be called to send messages without persisting it
in SMB db, and does not require any permission. It is not a public
API and is not used by any app per go/nonsdk-dash-per-api

Test: TH
Bug: 195311502
Change-Id: I06c63024de7e44b4aa7cb43d72b2f298c8355118

telephony/java/android/telephony/SmsManager.java

@@ -773,37 +773,6 @@ public final class SmsManager {
         }
     }
 
-    /**
-     * Send a text based SMS without writing it into the SMS Provider.
-     *
-     * <p>Requires Permission:
-     * {@link android.Manifest.permission#MODIFY_PHONE_STATE} or the calling app has carrier
-     * privileges.
-     * </p>
-     *
-     * <p class="note"><strong>Note:</strong> This method is intended for internal use by carrier
-     * applications or the Telephony framework and will never trigger an SMS disambiguation
-     * dialog. If this method is called on a device that has multiple active subscriptions, this
-     * {@link SmsManager} instance has been created with {@link #getDefault()}, and no user-defined
-     * default subscription is defined, the subscription ID associated with this message will be
-     * INVALID, which will result in the SMS being sent on the subscription associated with logical
-     * slot 0. Use {@link #getSmsManagerForSubscriptionId(int)} to ensure the SMS is sent on the
-     * correct subscription.
-     * </p>
-     *
-     * @see #sendTextMessage(String, String, String, PendingIntent,
-     * PendingIntent, int, boolean, int)
-     * @hide
-     */
-    @UnsupportedAppUsage
-    public void sendTextMessageWithoutPersisting(
-            String destinationAddress, String scAddress, String text,
-            PendingIntent sentIntent, PendingIntent deliveryIntent, int priority,
-            boolean expectMore, int validityPeriod) {
-        sendTextMessageInternal(destinationAddress, scAddress, text, sentIntent, deliveryIntent,
-                false /* persistMessage */, priority, expectMore, validityPeriod);
-    }
-
     /**
      *
      * Inject an SMS PDU into the android application framework.