Husain Ahmed

This plugin remove extra p and br tags from the_content, the_excerpt and widget_text_content.

Empty P Tag

This plugin is very easy to install and use, there are no extra setting to do.

Easy and best performance

This plugin hides empty paragraphs and make your butyfull design without breaking design.

binary-organic

With this plugin installed, you can say goodby to automatic and unwanted paragraph tags, your markup can stay beautiful, and never again will you have to wonder why there are line breaks where none should be.
Github: https://github.com/binaryorganic/Disable-Automatic-P-Tags

Disable Automatic P Tags

Disables the Wordpress "feature" that injects paragraph tags into double line breaks.

Empty P Tag vs Disable Automatic P Tags