Why decommission Browser Plug-ins?
Browser plug-ins were very necessary when they were created. Browser plug-ins were used to add features to web browsers that the browsers didn't have.
But now browsers are integrating plug-in features into the browsers themselves.
What is the replacement for search plugins?
Try out the Cisco.com search now. Cisco.com is rich in content and by using search features all content can be browsed with more filter options.
More Search general tips available