how to remove unwanted keywords from keyword statistics plugin

Hello,

I used Keyword Statistics plugin, which added unwanted keywords into my html code.

Is there a way to remove it? I already deactivated the plugin, but the meta keywords are still in the html code.

`
<!– metadata inserted by keyword-statistics-plugin 1.7.1 https://www.keyword-statistics.net –>
<meta name=”keywords”content=”self,life,improvement,plan,know,ga,time,just” />

etc
etc
etc

<!– end of metadata –>

The blog is https://www.lifepath4u.com if you want to check the source.

Thanks