tests/functional: remove unused 'bin_prefix' variable

This was copied over from avocado but has not been used in the new
functional tests.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250228102738.3064045-2-berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
1 file changed