wpcf7_add_shortcode are deprecated!

Backend error when plugin is activated:

“wpcf7_remove_shortcode è deprecato dalla versione 4.6! Utilizza invece wpcf7_remove_form_tag.” (google traslation: wpcf7_remove_shortcode is deprecated by version 4.6! Use wpcf7_remove_form_tag instead.)

To fix: https://github.com/relu/contact-form-7-datepicker/issues/178

plugin development is dead?