removed false documentation about memory leak.

bandwidth.go

@@ -12,7 +12,6 @@ import (
 // a Bandwidth then feed values using the AddRx and AddTx channels. When the
 // accumulated values are needed, simply read from the Rx or Tx chans. When the
 // Bandwidth is no loner needed close the Quit chan.
-// At this time it uses container/list and leaks memory like a sieve.
 type Bandwidth struct {
 	// write number of bytes to us
 	AddRx chan int