tplimpl: Remove speakerdeck shortcode

Fixes #4830

hugolib/embedded_shortcodes_test.go

@@ -160,35 +160,6 @@ title: Shorty
 	}
 }
 
-func TestShortcodeSpeakerdeck(t *testing.T) {
-	t.Parallel()
-
-	for _, this := range []struct {
-		in, expected string
-	}{
-		{
-			`{{< speakerdeck 4e8126e72d853c0060001f97 >}}`,
-			"(?s)<script async class='speakerdeck-embed' data-id='4e8126e72d853c0060001f97'.*?>.*?</script>",
-		},
-	} {
-
-		var (
-			cfg, fs = newTestCfg()
-			th      = testHelper{cfg, fs, t}
-		)
-
-		writeSource(t, fs, filepath.Join("content", "simple.md"), fmt.Sprintf(`---
-title: Shorty
----
-%s`, this.in))
-		writeSource(t, fs, filepath.Join("layouts", "_default", "single.html"), `{{ .Content }}`)
-
-		buildSingleSite(t, deps.DepsCfg{Fs: fs, Cfg: cfg}, BuildCfg{})
-
-		th.assertFileContentRegexp(filepath.Join("public", "simple", "index.html"), this.expected)
-	}
-}
-
 func TestShortcodeYoutube(t *testing.T) {
 	t.Parallel()