remove redundant elk

d2layouts/d2elklayout/elk.go

@@ -0,0 +1,10 @@
+//go:build !js && !wasm
+
+package d2elklayout
+
+import (
+	_ "embed"
+)
+
+//go:embed elk.js
+var elkJS string

d2layouts/d2elklayout/elk_js.go

@@ -0,0 +1,6 @@
+//go:build js && wasm
+
+package d2elklayout
+
+// No embed, since this is already bundled in the js worker
+var elkJS string

d2layouts/d2elklayout/layout.go

@@ -26,9 +26,6 @@ import (
 	"oss.terrastruct.com/d2/lib/shape"
 )
 
-//go:embed elk.js
-var elkJS string
-
 //go:embed setup.js
 var setupJS string