[TASK] Remove legacy font formats

eot, otf and ttf font formats were used to support very old browsers
like <= IE8. Since TYPO3 v10 does only support modern browsers, these
formats can be safely removed.

Used commands:
>yarn remove npm-font-source-sans-pro
>yarn add source-sans-pro
>grunt build

Resolves: #90904
Releases: master, 10.4
Change-Id: I0676bcdb2bc70454f73027e8e216bb889c419a57
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/64596


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>