How to uninstall this plugin?

This plugin doesn’t modify the .htaccess file. Are you sure you are using this plugin?

Yes I am sure I am using this plugin, I found this plugin in theme package Newspaper 9 & I saw some codes in .htaccess

That’s why I am asking you how to delete that code??

The Newspaper theme may be making those changes to the .htaccess file. The AMP plugin doesn’t modify that file. I suggest contacting tagDiv support.

I found this code under htaccess

# AMPFORWPLBROWSERCSTART Browser Caching
<IfModule mod_expires.c>
ExpiresActive On
ExpiresByType image/gif “access 1 year”
ExpiresByType image/jpg “access 1 year”
ExpiresByType image/jpeg “access 1 year”
ExpiresByType image/png “access 1 year”
ExpiresByType image/x-icon “access 1 year”
ExpiresByType text/css “access 3 month”
ExpiresByType text/javascript “access 3 month”
ExpiresByType text/html “access 3 month”
ExpiresByType application/javascript “access 3 month”
ExpiresByType application/x-javascript “access 3 month”
ExpiresByType application/xhtml-xml “access 3 month”
ExpiresByType application/pdf “access 3 month”
ExpiresByType application/x-shockwave-flash “access 3 month”
ExpiresDefault “access 3 month”
</IfModule>
# END Caching AMPFORWPLBROWSERCEND

That code is not from our plugin. That code is from another AMP plugin: AMP for WP – Accelerated Mobile Pages.

You can see it adding the code here: https://github.com/ahmedkaludi/accelerated-mobile-pages/blob/6fae1c4d1577651cc1bcb5a4b9f5fb5cc34eaa5e/includes/features/performance/performance-functions.php#L149-L182

Please contact their support forum instead: https://www.ads-software.com/support/plugin/accelerated-mobile-pages/