hw/intc/arm_gic_kvm: Fix build on aarch64

Remove unused debugging code to fix native building on aarch64. Without
this change, the following -Werr output inhibits make from completing.

  qemu/hw/intc/arm_gic_kvm.c:38:18: error: debug_gic_kvm defined but not used [-Werror=unused-const-variable=]
   static const int debug_gic_kvm = 0;
                    ^~~~~~~~~~~~~
  cc1: all warnings being treated as errors
  qemu/rules.mak:60: recipe for target 'hw/intc/arm_gic_kvm.o' failed
  make[1]: *** [hw/intc/arm_gic_kvm.o] Error 1
  Makefile:205: recipe for target 'subdir-aarch64-softmmu' failed
Signed-off-by: NChristopher Covington <cov@codeaurora.org>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 20161011163202.19720-1-cov@codeaurora.org
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/intc/arm_gic_kvm.c

@@ -30,20 +30,6 @@
 #include "gic_internal.h"
 #include "vgic_common.h"
 
-//#define DEBUG_GIC_KVM
-
-#ifdef DEBUG_GIC_KVM
-static const int debug_gic_kvm = 1;
-#else
-static const int debug_gic_kvm = 0;
-#endif
-
-#define DPRINTF(fmt, ...) do { \
-        if (debug_gic_kvm) { \
-            printf("arm_gic: " fmt , ## __VA_ARGS__); \
-        } \
-    } while (0)
-
 #define TYPE_KVM_ARM_GIC "kvm-arm-gic"
 #define KVM_ARM_GIC(obj) \
      OBJECT_CHECK(GICState, (obj), TYPE_KVM_ARM_GIC)