ci: opt-out panfrost from clang-format

In 0e481bf463 ("ci: Opt out asahi from clang-format"), Alyssa
recommended other drivers to follow suit. Since Panfrost originates from
Alyssa, and I doubt any other of the developers particularly cares too
much about this, let's follow her recommendation.

Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26062>

.clang-format-include

@@ -1,7 +1,6 @@
 # The following files are opted into `ninja clang-format` and
 # enforcement in the CI.
 
-src/**/panfrost/**/*
 src/gallium/drivers/i915
 src/amd/vulkan/**/*
 src/amd/compiler/**/*

.gitlab-ci/test-source-dep.yml

@@ -235,7 +235,6 @@
       - .clang-format-ignore
       - src/**/.clang-format
       - src/egl/**/*
-      - src/**/panfrost/**/*
       - src/amd/vulkan/**/*
       - src/amd/compiler/**/*
       when: on_success