diff --git a/tools/scripts/modules/rt/rt_utils.lua b/tools/scripts/modules/rt/rt_utils.lua
deleted file mode 100644
index b5d9fc0..0000000
--- a/tools/scripts/modules/rt/rt_utils.lua
+++ /dev/null
@@ -1,96 +0,0 @@
--- Licensed under the Apache License, Version 2.0 (the "License");
--- You may not use this file except in compliance with the License.
--- You may obtain a copy of the License at
---
---     http://www.apache.org/licenses/LICENSE-2.0
---
--- Unless required by applicable law or agreed to in writing, software
--- distributed under the License is distributed on an "AS IS" BASIS,
--- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
--- See the License for the specific language governing permissions and
--- limitations under the License.
---
--- Copyright (C) 2023-2023 RT-Thread Development Team
---
--- @author      xqyjlj  
--- @file        rt_utils.lua
---
--- Change Logs:
--- Date           Author       Notes
--- ------------   ----------   -----------------------------------------------
--- 2023-05-09     xqyjlj       initial version
---
-import("core.project.project")
-import("core.project.config")
-
-function rootfs_dir()
-    local rootdir
-    local userapps_dir = os.getenv("RT_XMAKE_USERAPPS_DIR")
-
-    if userapps_dir then
-        rootdir = path.join(userapps_dir, "rootfs")
-    else
-        rootdir = path.join(project.directory(), config.buildir(), "rootfs") -- use default rootfs
-    end
-
-    if not os.exists(rootdir) then
-        os.mkdir(rootdir)
-    end
-
-    return rootdir
-end
-
-function ldscripts_dir()
-    local rootdir
-    local userapps_dir = os.getenv("RT_XMAKE_USERAPPS_DIR")
-    if userapps_dir then
-        rootdir = path.join(userapps_dir, "linker_scripts")
-    else
-        rootdir = path.absolute("../../../ldscripts", os.scriptdir()) -- use default ldscripts
-    end
-
-    return rootdir
-end
-
-function sdk_dir()
-    local rootdir
-    local userapps_dir = os.getenv("RT_XMAKE_USERAPPS_DIR")
-
-    if userapps_dir then
-        rootdir = path.join(userapps_dir, "sdk")
-    else
-        rootdir = path.absolute("../../../../sdk", os.scriptdir()) -- use default prebuilt sdk
-    end
-
-    return rootdir
-end
-
-function cp_with_symlink(srcpath, dstpath, opt)
-    local option
-
-    if (os.getenv("--rt-xmake-no-symlink") == "true") then
-        option = opt or {symlink = false}
-    else
-        option = opt or {symlink = true}
-    end
-    if (opt and opt.del == false) then
-        os.execv("cp -r", {srcpath, dstpath})
-    else
-        os.tryrm(dstpath)
-        os.vcp(srcpath, dstpath, option)
-    end
-end
-
-function dirsize(dir)
-    if not os.isdir(dir) then
-        raise('not find dir "%s"', dir)
-    end
-
-    if os.host() == "linux" then
-        local result = os.iorunv("du", {"-sh", dir})
-        local size = result:match("^(%S+)%s+")
-        return size
-    else
-        return "unknown"
-    end
-end