In English, https://www.gnu.org/licenses/license-list.en.html#Scratch reads:
Scratch 1.4 license: This is not a free software license because it does not
allow commercial redistribution. In addition, condition 4 substantively
restricts the functionality of modified versions. Newer versions Scratch
software are distributed under the GNU GPL, but some of those newer version
we do not recommend, because they depend on the proprietary software, Adobe
Air.
Since "newer versions Scratch software are distributed under the GNU GPL",
there is no "need to delete Scratch in Trisquel 8.0" like you ask for. Of
course, Trisquel will never include one of the versions that "depend on the
proprietary software, Adobe Air".