diff --git a/cm.go b/cm.go
deleted file mode 100644
index 604c8b9..0000000
--- a/cm.go
+++ /dev/null
@@ -1,10 +0,0 @@
-package main
-
-import (
-	"sync"
-)
-
-// connection manager
-type CM struct {
-	mu sync.Mutex
-}