diff --git a/install.py b/install.py
index 6f0e749..f2da4fa 100644
--- a/install.py
+++ b/install.py
@@ -55,10 +55,6 @@ def _clone_github_repo(self, repo_url, repo_name, *args):
         print("clone: {}".format(command))
         subprocess.run(command, shell=True)
 
-    def _cmd(self, command):
-        print("[command] {}".format(command))
-        subprocess.run(command, shell=True)
-
     def _clone_setup(self):
         self._clone_github_repo(
             "https://github.com/minhanghuang/setup.git",