tests/lcitool: remove temp workaround for debian mips64el

tests/lcitool: remove temp workaround for debian mips64el

The workaround applied in

  commit c60473d29254b79d9437eface8b342e84663ba66
  Author: Alex Bennée <alex.bennee@linaro.org>
  Date:   Wed Oct 2 10:03:33 2024 +0200

    testing: bump mips64el cross to bookworm and fix package list

Is no longer required since the affected builds are now fixed.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20241217133525.3836570-1-berrange@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250108121054.1126164-27-alex.bennee@linaro.org>