* thread.c (timer_thread_function): unused variable.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27522 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

thread.c

@@ -2673,7 +2673,6 @@ static void
 timer_thread_function(void *arg)
 {
     rb_vm_t *vm = GET_VM(); /* TODO: fix me for Multi-VM */
-    rb_thread_t *mth;
 
     /* for time slice */
     RUBY_VM_SET_TIMER_INTERRUPT(vm->running_thread);