When non-logged-in users go to submit a Listing, they are presented with a sign-in/register box, and there is also a corresponding side navigation item. This snippet removes both.
/* ML - HIDE ACCOUNT SECTION ON MYLISTING SUBMIT FORM */
body:not(.logged-in) form.c27-submit-listing-form #form-section-auth {
display: none;
}
/* ML- HIDE THE SIDE NAVIGATION ITEM FOR THE ACCOUNT SECTION
li#form-section-auth-nav {
display: none;
}