UEFI test: fix windows SB test

Don't remove the pool certs just after installing them, duh!

Signed-off-by: Samuel Verschelde <[email protected]>

tests/uefi_sb/test_varstored_sb.py

@@ -100,7 +100,6 @@ def test_windows_succeeds(self, uefi_vm):
         # We install them first in the pool with `secureboot-certs install`, which requires internet access
         logging.info("Install MS certs on pool with secureboot-certs install")
         vm.host.ssh(['secureboot-certs', 'install'])
-        vm.host.pool.clear_custom_uefi_certs()
         # Now install the default pool certs in the VM
         vm.set_uefi_user_mode()
         boot_and_check_sb_succeeded(vm)