lib/crc16_kunit: delete obsolete crc16_kunit.c

This new test showed up in v6.13-rc1.  Delete it since it is being
superseded by crc_kunit.c, which is more comprehensive (tests multiple
CRC variants without duplicating code, includes a benchmark, etc.).

Cc: Vinicius Peixoto <vpeixoto@lkcamp.dev>
Link: https://lore.kernel.org/r/20241202012056.209768-10-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>

Author: ebiggers

lib/Kconfig.debug

@@ -2878,15 +2878,6 @@ config USERCOPY_KUNIT_TEST
 	  on the copy_to/from_user infrastructure, making sure basic
 	  user/kernel boundary testing is working.
 
-config CRC16_KUNIT_TEST
-	tristate "KUnit tests for CRC16"
-	depends on KUNIT
-	default KUNIT_ALL_TESTS
-	select CRC16
-	help
-	  Enable this option to run unit tests for the kernel's CRC16
-	  implementation (<linux/crc16.h>).
-
 config TEST_UDELAY
 	tristate "udelay test driver"
 	help

lib/Makefile

@@ -394,7 +394,6 @@ obj-$(CONFIG_FORTIFY_KUNIT_TEST) += fortify_kunit.o
 obj-$(CONFIG_CRC_KUNIT_TEST) += crc_kunit.o
 obj-$(CONFIG_SIPHASH_KUNIT_TEST) += siphash_kunit.o
 obj-$(CONFIG_USERCOPY_KUNIT_TEST) += usercopy_kunit.o
-obj-$(CONFIG_CRC16_KUNIT_TEST) += crc16_kunit.o
 
 obj-$(CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED) += devmem_is_allowed.o