WP Head Cleanup helps you to remove unnecessary extra links from the page header.
The Plugin will remove following links:
rsd_link
This will remove Really Simple Discovery link from the header.
wp_generator
This will remove the WordPress generator tag.
feed_links
This will remove the standard feed links.
feed_links_extra
This will remove the extra feed links.
index_rel_link
This will remove index link.
wlwmanifest_link
This will remove wlwmanifest
parent_post_rel_link
This will remove parent post link
start_post_rel_link
This will remove start post link
adjacent_posts_rel_link_wp_head
This will remove the prev and next post link
wp_shortlink_wp_head
This will remove shortlink for the page
You can find docs
The following are other recommended plugins by the author of WP Head Cleanup: