Merge pull request #4361 from shuujii/remove-unused-mrb_proc_cfunc_p

Remove unused `mrb_proc_cfunc_p()`

src/proc.c

@@ -213,12 +213,6 @@ mrb_proc_init_copy(mrb_state *mrb, mrb_value self)
   return self;
 }
 
-int
-mrb_proc_cfunc_p(struct RProc *p)
-{
-  return MRB_PROC_CFUNC_P(p);
-}
-
 /* 15.2.17.4.2 */
 static mrb_value
 proc_arity(mrb_state *mrb, mrb_value self)

src/vm.c

@@ -1004,7 +1004,7 @@ void mrb_hash_check_kdict(mrb_state *mrb, mrb_value self);
 MRB_API mrb_value
 mrb_vm_exec(mrb_state *mrb, struct RProc *proc, mrb_code *pc)
 {
-  /* mrb_assert(mrb_proc_cfunc_p(proc)) */
+  /* mrb_assert(MRB_PROC_CFUNC_P(proc)) */
   mrb_code *pc0 = pc;
   mrb_irep *irep = proc->body.irep;
   mrb_value *pool = irep->pool;