devel-docs: delete ScriptFu docs
After moving to repo gimp-web-devel:
- Infrastructure/gimp-web-devel!91 (merged)
- Infrastructure/gimp-web-devel!92 (merged)
- Infrastructure/gimp-web-devel!93 (merged)
- Infrastructure/gimp-web-devel!94 (merged)
- Infrastructure/gimp-web-devel!95 (merged)
- Infrastructure/gimp-web-devel!96 (merged)
Per developer guideline: no developer documents in the GIMP repo, prefer separate repo on gnome gitlab gimp-web-devel.
Only ScriptFu related docs.
Edited by Bruno