Remove onClick from submit button

frontend/src/routes/sponsor/guest/newGuestRole/index.tsx

@@ -399,12 +399,7 @@ function NewGuestRole({ guest, reloadGuestInfo }: NewGuestRoleProps) {
               label={t('input.searchable')}
             />
           )}
-          <Button
-            onClick={onSubmit}
-            variant="contained"
-            color="secondary"
-            type="submit"
-          >
+          <Button variant="contained" color="secondary" type="submit">
             {t('button.save')}
           </Button>
           <Button