[PATCH 2/2] kbuild: remove old Rust docs output path

[Miguel Ojeda <ojeda@kernel.org>]

The Rust code documentation output path moved from `rust/doc` to
`Documentation/output/rust/rustdoc`. The `make cleandocs` target
takes care of cleaning it now since it is integrated with the rest
of the documentation.

Thus remove the old reference.

Fixes: 48fadf440075 ("docs: Move rustdoc output, cross-reference it")
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 373649c7374e..040018111f32 100644
--- a/Makefile
+++ b/Makefile
@@ -1474,7 +1474,7 @@ endif # CONFIG_MODULES
 # Directories & files removed with 'make clean'
 CLEAN_FILES += vmlinux.symvers modules-only.symvers \
 	       modules.builtin modules.builtin.modinfo modules.nsdeps \
-	       compile_commands.json .thinlto-cache rust/test rust/doc \
+	       compile_commands.json .thinlto-cache rust/test \
 	       rust-project.json .vmlinux.objs .vmlinux.export.c
 
 # Directories & files removed with 'make mrproper'
-- 
2.42.0