Sander van Dragt

Introducing Hide Trackbacks – keep the benefits of track- and pingbacks (know when someone writes about posts) while keeping the comments clean and uncluttered.
After enabling the plugin, trackbacks and pingbacks are no longer shown on your posts and the comment count is updated correctly to reflect this. They remain accessible via the admin panel.
Original code created by <a href="http://www.honeytechblog.com/how-to-remove-tracbacks-and-pings-from-wordpress-posts/" rel="nofollow ugc">Honey Singh</a> (used with permission of the author).

Hide Trackbacks

Prevents trackbacks and pingbacks from showing up as comments on posts.

Blogestudio

Pau Iglesias

When your blog posts receive pingbacks and trackbacks usually they are displayed together with user opinions.
But if you don’t like to see this additional data, or you think pingbacks and trackbacks are not valuable for your blog, here is a tool to remove them.
This plugin allows you to delete all pingbacks and trackbacks comments from your blog, leaving only user comments.
Furthermore turns to closed the ping status of existing posts still allowing new notifications, avoiding them future pingbacks or trackbacks.
And for new posts, to avoid more notifications, updates the default post ping status value to closed (this option is available in Discussion Settings section).
Full support for any kind of custom post types. There is a filter for developers if you want to exclude a particular post type.
This plugin provides a single one step form to do these changes, but previously it’s strongelly recommended you perform a database backup.
Once completed this process, you will not receive more pingbacks or trackbacks unless you do not change posts or blog notifications configuration.

Remove Pingback-Trackback Comments

One step process to remove pingbacks and trackbacks and leave only real user opinions in your posts comments.

Hide Trackbacks vs Remove Pingback-Trackback Comments