host/i386: assume presence of CMOV

QEMU now requires an x86-64-v2 host, which always has CMOV.
Use it freely in TCG generated code.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

host/include/i386/host/cpuinfo.h

@@ -9,7 +9,6 @@
 /* Digested version of <cpuid.h> */
 
 #define CPUINFO_ALWAYS          (1u << 0)  /* so cpuinfo is nonzero */
-#define CPUINFO_CMOV            (1u << 1)
 #define CPUINFO_MOVBE           (1u << 2)
 #define CPUINFO_LZCNT           (1u << 3)
 #define CPUINFO_POPCNT          (1u << 4)