fix: removed double check for consumed/expired invitations

internal/domain/registration.go

@@ -3,7 +3,6 @@ package domain
 import (
 	"context"
 	"log/slog"
-	"time"
 )
 
 type RegistrationService struct {
@@ -23,13 +22,6 @@ func (s *RegistrationService) Register(ctx context.Context, inviteCode string, e
 		return nil, err
 	}
 
-	if invite.ConsumedAt != nil {
-		return nil, ErrInviteConsumed
-	}
-	if invite.ExpiresAt.Before(time.Now()) {
-		return nil, ErrInviteExpired
-	}
-
 	var user *User
 	err = s.tx.WithinTx(ctx, func(ctx context.Context) error {
 		user, err = s.UserService.CreateUser(ctx, email, username, password)