include/cpu/amd/msr: don't redefine the IA32_BIOS_SIGN_ID MSR

Change-Id: Iff19ae495fb9c0795dae4b2844dc8e0220a57b2c
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56310
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

src/include/cpu/amd/msr.h

@@ -80,7 +80,6 @@
 #define S3_RESUME_EIP_MSR		0xC00110E0
 #define PSP_ADDR_MSR			0xc00110a2
 
-#define MSR_PATCH_LEVEL			0x0000008B
 #define CORE_PERF_BOOST_CTRL		0x15c
 
 #endif /* CPU_AMD_MSR_H */