The WP DELETE HEADER command deletes the header element associated to the section or subsection defined by the wpSection parameter.
If no header element exists for the section or subsection, the command does nothing.
You want to delete the header of the right pages of a section:
C_OBJECT($section;$subsection;$header)
$section:=WP Get section(wpDoc;1)
$subsection:=WP Get subsection($section;wk right page)
WP DELETE HEADER($subsection)