rust: don't select CONSTRUCTORS

BugLink: https://bugs.launchpad.net/bugs/2070337

commit 7d49f53af4b988b188d3932deac2c9c80fd7d9ce upstream.

This was originally part of commit 4b9a68f2e59a0 ("rust: add support for
static synchronisation primitives") from the old Rust branch, which used
module constructors to initialize globals containing various
synchronisation primitives with pin-init. That commit has never been
upstreamed, but the `select CONSTRUCTORS` statement ended up being
included in the patch that initially added Rust support to the Linux
Kernel.

We are not using module constructors, so let's remove the select.

Signed-off-by: Alice Ryhl <[email protected]>
Reviewed-by: Benno Lossin <[email protected]>
Cc: [email protected]
Fixes: 2f7ab12 ("Kbuild: add Rust support")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Miguel Ojeda <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Manuel Diewald <[email protected]>
Signed-off-by: Stefan Bader <[email protected]>

Author: Darksonn

init/Kconfig

@@ -1916,7 +1916,6 @@ config RUST
 	depends on !GCC_PLUGINS
 	depends on !RANDSTRUCT
 	depends on !DEBUG_INFO_BTF || PAHOLE_HAS_LANG_EXCLUDE
-	select CONSTRUCTORS
 	help
 	  Enables Rust support in the kernel.