Remove old initial code

main.go

@@ -1,15 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"io"
-	"os"
-)
-
-func printMessage(w io.Writer, msg string) {
-	fmt.Fprint(w, msg)
-}
-
-func main() {
-	printMessage(os.Stdout, "Hello MQTT\n")
-}

main_test.go

@@ -1,17 +0,0 @@
-package main
-
-import (
-	"bytes"
-	"testing"
-)
-
-func TestPrintMessage(t *testing.T) {
-	buffer := bytes.Buffer{}
-	printMessage(&buffer, "Hello MQTT\n")
-	got := buffer.String()
-	want := "Hello MQTT\n"
-
-	if got != want {
-		t.Errorf("Error. Got %s but wanted %s", got, want)
-	}
-}