DannyCooper

This plugin removes font-family, font-size, font-weight, line-height and color declarations from existing content.
This can be useful if you have published posts and pages with out of date styling. It also removes unwanted styles that may appear when copy and pasting from Microsoft Word or other text editors.
Before:
<pre><code>Hello world.
</code></pre>
After:
<pre><code>Hello world.
</code></pre>

Font Stripper

Removes inline font declarations from existing content.

shazdeh

This plugin stops loading of all Google fonts, added by themes and plugins.
There are various reasons you might need this, most noticeably is performance. But also you might be developing locally, or blocking of Google’s servers, etc.

No Google Fonts

Prevent Google fonts from loading on the frontend of the website.

Font Stripper vs No Google Fonts