browser: simplify API

The context is doing nothing here.
diff --git a/dockerimg/dockerimg.go b/dockerimg/dockerimg.go
index 03fc400..baaf506 100644
--- a/dockerimg/dockerimg.go
+++ b/dockerimg/dockerimg.go
@@ -311,9 +311,9 @@
 		// We open the browser after the init config because the above waits for the web server to be serving.
 		if config.OpenBrowser {
 			if config.SkabandAddr != "" {
-				browser.Open(ctx, fmt.Sprintf("%s/s/%s", config.SkabandAddr, config.SessionID))
+				browser.Open(fmt.Sprintf("%s/s/%s", config.SkabandAddr, config.SessionID))
 			} else {
-				browser.Open(ctx, "http://"+localAddr)
+				browser.Open("http://" + localAddr)
 			}
 		}
 	}()