core/vm: remove stack.pushN (#24040)

core/vm/stack.go

@@ -54,10 +54,6 @@ func (st *Stack) push(d *uint256.Int) {
 	// NOTE push limit (1024) is checked in baseCheck
 	st.data = append(st.data, *d)
 }
-func (st *Stack) pushN(ds ...uint256.Int) {
-	// FIXME: Is there a way to pass args by pointers.
-	st.data = append(st.data, ds...)
-}
 
 func (st *Stack) pop() (ret uint256.Int) {
 	ret = st.data[len(st.data)-1]