Unfortunately currently we do not have an option to disable this from backend.

Ok in that case can you point out the file in which this is being called so that I can do a local hack.

Based on what i check, it seems like we already compiled these into this minify css file.

JoomlaFolder/components/com_easyblog/themes/nickel/styles/style-5.1.15.min.css

If you using other theme like wireframe, that file path will be :
JoomlaFolder/components/com_easyblog/themes/wireframe/styles/style-5.1.15.min.css

If your current Easyblog version is 5.1.12, that file path will be :
JoomlaFolder/components/com_easyblog/themes/nickel/styles/style-5.1.12.min.css

Open this file and find these following code.

[gist type="css"]
@font-face{font-family:'FontAwesome';src:url('../../../../../media/com_easyblog/fonts/font-awesome/fontawesome-webfont.eot?v=4.7.0');src:url('../../../../../media/com_easyblog/fonts/font-awesome/fontawesome-webfont.eot?#iefix&v=4.7.0') format('embedded-opentype'),url('../../../../../media/com_easyblog/fonts/font-awesome/fontawesome-webfont.woff2?v=4.7.0') format('woff2'),url('../../../../../media/com_easyblog/fonts/font-awesome/fontawesome-webfont.woff?v=4.7.0') format('woff'),url('../../../../../media/com_easyblog/fonts/font-awesome/fontawesome-webfont.ttf?v=4.7.0') format('truetype'),url('../../../../../media/com_easyblog/fonts/font-awesome/fontawesome-webfont.svg?v=4.7.0#fontawesomeregular') format('svg');font-weight:normal;font-style:normal}
[/gist]

Currently I am not sure if remove these code is it will affect other issue or not, but you can give it a try and see how it goes.

Make sure you have do the full backup for that original file.