s390/crc32: Remove no-op module init and exit functions

Now that the crc32-s390 module init function is a no-op, there is no
need to define it.  Remove it.  The removal of the init function also
makes the exit function unnecessary, so remove that too.

Acked-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/20250417163829.4599-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>

Author: ebiggers

arch/s390/lib/crc32-glue.c

@@ -61,17 +61,6 @@ DEFINE_CRC32_VX(crc32_le_arch, crc32_le_vgfm_16, crc32_le_base)
 DEFINE_CRC32_VX(crc32_be_arch, crc32_be_vgfm_16, crc32_be_base)
 DEFINE_CRC32_VX(crc32c_arch, crc32c_le_vgfm_16, crc32c_base)
 
-static int __init crc32_s390_init(void)
-{
-	return 0;
-}
-arch_initcall(crc32_s390_init);
-
-static void __exit crc32_s390_exit(void)
-{
-}
-module_exit(crc32_s390_exit);
-
 u32 crc32_optimizations(void)
 {
 	if (cpu_has_vx()) {