nak: Drop the nvfuzz binary

A much better version now exists as part of
https://gitlab.freedesktop.org/gfxstrand/nv-shader-tools

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30283>

.gitlab-ci/test/gitlab-ci.yml

@@ -41,7 +41,6 @@ rustfmt:
     - shopt -s globstar
     - rustfmt --version
     - rustfmt --verbose src/**/lib.rs
-    - rustfmt --verbose src/**/main.rs
 
 python-test:
   # Cancel job if a newer commit is pushed to the same branch