Revert "Restart fingerprint auth on cancel."

This reverts commit 4efd4c16f9.

Reason for revert: Breaks auth behavior

Fixes: 347858844

Change-Id: Ie1b8be9dfae2cba7e2b37187f08cf1360aedf29f

src/com/android/settings/biometrics/fingerprint/FingerprintSettings.java

@@ -352,6 +352,11 @@ public class FingerprintSettings extends SubSettings {
          */
         protected void handleError(int errMsgId, CharSequence msg) {
             switch (errMsgId) {
+                case FingerprintManager.FINGERPRINT_ERROR_CANCELED:
+                case FingerprintManager.FINGERPRINT_ERROR_USER_CANCELED:
+                    // Only happens if we get preempted by another activity, or canceled by the
+                    // user (e.g. swipe up to home). Ignored.
+                    return;
                 case FingerprintManager.FINGERPRINT_ERROR_LOCKOUT:
                     mInFingerprintLockout = true;
                     // We've been locked out.  Reset after 30s.