Due to changes in how header images are used in Genesis 2.1+ and Genesis Sample, we removed the header image upload feature in v1.3.1 and replaced it with custom header theme support.

By default, only Genesis/Genesis Sample will have this custom header enabled. We've added a filter so you can disable it if needed, or enable it if you need to add header support to another child theme.
Disable custom header support.
add_filter( 'gppro_enable_header_image_support', 'docs_gppro_disable_header_support' );
function docs_gppro_disable_header_support( $enabled ) {
	// is only true for Genesis/Genesis Sample by default
	return false;