wireguard: selftests: cleanup CONFIG_UBSAN_SANITIZE_ALL

Commit 918327e ("ubsan: Remove CONFIG_UBSAN_SANITIZE_ALL")
removed the CONFIG_UBSAN_SANITIZE_ALL configuration option.
Eliminate invalid configurations to improve code readability.

Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: WangYuli <wangyuli@uniontech.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Link: https://patch.msgid.link/20250521212707.1767879-2-Jason@zx2c4.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Author: WangYuli

tools/testing/selftests/wireguard/qemu/debug.config

@@ -22,7 +22,6 @@ CONFIG_HAVE_ARCH_KASAN=y
 CONFIG_KASAN=y
 CONFIG_KASAN_INLINE=y
 CONFIG_UBSAN=y
-CONFIG_UBSAN_SANITIZE_ALL=y
 CONFIG_DEBUG_KMEMLEAK=y
 CONFIG_DEBUG_STACK_USAGE=y
 CONFIG_DEBUG_SHIRQ=y