Revert "Avoid LockSettingsService NPE during CTS due to races around user removal."

This reverts commit e83f512553.

Reason for revert: http://b/125421639 was due to a bug in broadcasts which is now fixed.

Change-Id: I678d7721c948dadfbca8aca50183290438e7f451

services/core/java/com/android/server/locksettings/LockSettingsService.java

@@ -1966,8 +1966,7 @@ public class LockSettingsService extends ILockSettings.Stub {
         } catch (RemoteException ex) {
             Slog.w(TAG, "unable to clear GK secure user id");
         }
-        UserInfo userInfo = mUserManager.getUserInfo(userId);
-        if (unknownUser || userInfo == null || userInfo.isManagedProfile()) {
+        if (unknownUser || mUserManager.getUserInfo(userId).isManagedProfile()) {
             removeKeystoreProfileKey(userId);
         }
     }