Don't call cancel() when fingerprint auth fails

KeyguardUpdateMonitor should not call cancel() when fingerprint
auth fails. The life cycle will continue until an actual error
occurs or the maximum number of retries is reached.

Fixes bug 22562277

Change-Id: I36291d025de9c049cc7f7924f692c8c21349bb7b

packages/Keyguard/src/com/android/keyguard/KeyguardUpdateMonitor.java

@@ -380,9 +380,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener {
 
     private void handleFingerprintAuthFailed() {
         releaseFingerprintWakeLock();
-        stopListeningForFingerprint();
         handleFingerprintHelp(-1, mContext.getString(R.string.fingerprint_not_recognized));
-        updateFingerprintListeningState();
     }
 
     private void handleFingerprintAcquired(int acquireInfo) {