Fix: Remove redundant AccountField check in auth logic

The check for `AccountField` being nil was unnecessary as the code handles the assignment condition elsewhere. This simplifies the `auth.go` file and ensures the logic is more streamlined and maintains correctness.

Signed-off-by: Christian Roessner <[email protected]>

Author: Christian Roessner

server/core/auth.go

@@ -1582,10 +1582,6 @@ func (a *AuthState) postVerificationProcesses(ctx *gin.Context, useCache bool, b
 	 */
 
 	if a.UserFound {
-		if passDBResult.AccountField != nil {
-			a.AccountField = passDBResult.AccountField
-		}
-
 		accountName, err = a.updateUserAccountInRedis()
 		if err != nil {
 			level.Error(log.Logger).Log(global.LogKeyGUID, a.GUID, global.LogKeyMsg, err.Error())