x86: msr-index.h remove duplicate MSR C001_0015 declaration

MSRC001_0015 Hardware Configuration Register (HWCR) is already defined
as MSR_K7_HWCR.

And HWCR is available for >= K7.

So MSR_K8_HWCR is not required and no-one is using it.

[ Impact: cleanup, no object code change ]
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>

arch/x86/include/asm/msr-index.h

@@ -121,7 +121,6 @@
 #define MSR_K8_TOP_MEM1			0xc001001a
 #define MSR_K8_TOP_MEM2			0xc001001d
 #define MSR_K8_SYSCFG			0xc0010010
-#define MSR_K8_HWCR			0xc0010015
 #define MSR_K8_INT_PENDING_MSG		0xc0010055
 /* C1E active bits in int pending message */
 #define K8_INTP_C1E_ACTIVE_MASK		0x18000000