You cannot simply override that file.
You can however override what the core.php file does:
Use remove_filter
/ remove_action
to remove filters you do not want to be run:
remove_action ( 'cryout_headerimage_hook', 'fluida_header_image' );
You cannot simply override that file.
You can however override what the core.php file does:
Use remove_filter
/ remove_action
to remove filters you do not want to be run:
remove_action ( 'cryout_headerimage_hook', 'fluida_header_image' );