Remove current membership plan from vendor membership list

add_filter( 'wcfm_memberships', function( $memberships ) {
    if( wcfm_is_vendor() ) {
        $vendor_id = apply_filters( 'wcfm_current_vendor_id', get_current_user_id() );
        $wcfm_membership_id = get_user_meta( $vendor_id, 'wcfm_membership', true );

        if( $wcfm_membership_id && wcfm_is_valid_membership( $wcfm_membership_id ) ) {
            foreach( $memberships as $key => $membership ) {
                if( $wcfm_membership_id == $membership->ID ) {
                    unset( $memberships[$key] );
                }
            }
        }
    }
    return $memberships;
} );