Revert "Log client errors."

We're already logging in the caller.

This reverts commit f4811e8c.

rtpconn/webclient.go

@@ -760,9 +760,6 @@ func StartClient(conn *websocket.Conn) (err error) {
 			c.write(*m)
 		}
 		c.close(e)
-		if err != nil {
-			log.Printf("Client: %v", err)
-		}
 	}()
 
 	return clientLoop(c, conn)