Drop the audit.log reset steps

Most tests have been converted to use the system journal to check for audit events, so there's no need to reset the audit.log anymore.

Resetting it is even harmful today since auditd is no longer shipped by default on images, thus the step fails as the file and the directory that should contain it do not exist.

Signed-off-by: Emanuele Aina emanuele.aina@collabora.com