[Zion] Remove dead ZMessage struct.

zion/object/channel.h

@@ -8,7 +8,6 @@
 #include "lib/message_queue.h"
 #include "object/ipc_object.h"
 #include "object/kernel_object.h"
-#include "usr/zcall_internal.h"
 
 class Channel;
 

zion/object/port.h

@@ -8,7 +8,6 @@
 #include "object/ipc_object.h"
 #include "object/kernel_object.h"
 #include "object/thread.h"
-#include "usr/zcall_internal.h"
 
 class Port;
 

zion/syscall/ipc.cpp

@@ -54,12 +54,6 @@ glcr::ErrorCode PortRecv(ZPortRecvReq* req) {
   RET_ERR(ValidateCapability<Port>(port_cap, kZionPerm_Read));
 
   auto port = port_cap->obj<Port>();
-  ZMessage message{
-      .num_bytes = *req->num_bytes,
-      .data = const_cast<void*>(req->data),
-      .num_caps = *req->num_caps,
-      .caps = req->caps,
-  };
   return port->Recv(req->num_bytes, req->data, req->num_caps, req->caps);
 }
 

zion/usr/zcall.cpp

@@ -2,8 +2,6 @@
 
 #include <stdint.h>
 
-#include "usr/zcall_internal.h"
-
 z_err_t SysCall1(uint64_t number, const void* first) {
   z_err_t return_code;
   asm("syscall" : "=a"(return_code) : "D"(number), "S"(first) : "rcx", "r11");

zion/usr/zcall_internal.h

@@ -1,13 +0,0 @@
-#pragma once
-
-#include <stdint.h>
-
-#include "include/ztypes.h"
-
-struct ZMessage {
-  uint64_t num_bytes;
-  void* data;
-
-  uint64_t num_caps;
-  z_cap_t* caps;
-};