x86/vvmx: Drop unused CASE_{GET,SET}_REG() macros

These have been obsolete since c/s 053ae230 "x86/vvmx: Remove enum
vmx_regs_enc".

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Sergey Dyasli <sergey.dyasli@citrix.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>

xen/arch/x86/hvm/vmx/vvmx.c

@@ -207,11 +207,6 @@ struct vmx_inst_decoded {
     unsigned int reg2;
 };
 
-#define CASE_SET_REG(REG, reg)      \
-    case VMX_REG_ ## REG: regs->reg = value; break
-#define CASE_GET_REG(REG, reg)      \
-    case VMX_REG_ ## REG: value = regs->reg; break
-
 static int vvmcs_offset(u32 width, u32 type, u32 index)
 {
     int offset;