Update UID drivers to align with latest UEFI spec 2.3.1.

Signed-off-by: gdong1
Reviewed-by: tye
Reviewed-by: qianouyang

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12567 6f19259b-4bc3-4df7-8a09-765794883524

SecurityPkg/UserIdentification/PwdCredentialProviderDxe/PwdCredentialProvider.c

@@ -745,7 +745,6 @@ CredentialEnroll (
   EFI_USER_INFO             *UserInfo;
   CHAR8                     Password[CREDENTIAL_LEN];
   EFI_INPUT_KEY             Key;
-  EFI_USER_MANAGER_PROTOCOL *UserManager;
   UINT8                     *UserId;
   CHAR16                    *QuestionStr;
   CHAR16                    *PromptStr;
@@ -754,15 +753,6 @@ CredentialEnroll (
     return EFI_INVALID_PARAMETER;
   }
 
-  Status = gBS->LocateProtocol (
-                  &gEfiUserManagerProtocolGuid,
-                  NULL,
-                  (VOID **) &UserManager
-                  );
-  if (EFI_ERROR (Status)) {
-    return EFI_UNSUPPORTED;
-  }
-
   //
   // Get User Identifier.
   //
@@ -835,11 +825,6 @@ CredentialEnroll (
     return Status;
   }
 
-  //
-  // Notify the user manager driver that credential information has changed.
-  //
-  UserManager->Notify (UserManager, mCallbackInfo->DriverHandle);  
-
   return EFI_SUCCESS;
 }