Revert "Fix the flicker of FingerprintSettings before FingerprintEnrollIntro."

This reverts commit 3ca9965a96.

Reason for revert: b/259709482

Change-Id: I1fcc8b3ecd42859af591a7b250edfedbbdf204e4
Merged-In: I1fcc8b3ecd42859af591a7b250edfedbbdf204e4

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

@@ -78,9 +78,7 @@ public class FingerprintStatusUtils {
      * Returns the class name of the Settings page corresponding to fingerprint settings.
      */
     public String getSettingsClassName() {
-        return !hasEnrolled() && isAvailable()
-            ? FingerprintEnrollIntroductionInternal.class.getName()
-            : FingerprintSettings.class.getName();
+        return FingerprintSettings.class.getName();
     }
 
     /**