Remove nano

After some manual testing, it seems nano does nothing special when
saving files and it is quite challenging to script it, so I decided to
remove it altogether.

Author: Molter73

tests/containers/editors/Containerfile

@@ -1,6 +1,5 @@
 FROM quay.io/fedora/fedora:43
 
 RUN dnf install -y \
-    nano \
     neovim \
     vim