tools/kvm_stat: removed unused function

Function available_fields() is not used in any place.

Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat
index a527b2f..1b8626b 100755
--- a/tools/kvm/kvm_stat/kvm_stat
+++ b/tools/kvm/kvm_stat/kvm_stat
@@ -671,9 +671,6 @@
 
             self.group_leaders.append(group)
 
-    def available_fields(self):
-        return self.get_available_fields()
-
     @property
     def fields(self):
         return self._fields