removing the old test UI codes

tui/internal/dom/uinode.go

@@ -0,0 +1,28 @@
+// Package dom
+package dom
+
+import (
+	"github.com/rivo/tview"
+)
+
+type UINode struct {
+	ID       string
+	Self     tview.Primitive
+	Parent   tview.Primitive
+	Children map[string]*UINode
+}
+
+func newUINode(ID string, parent, root tview.Primitive) *UINode {
+	return &UINode{
+		ID:       ID,
+		Self:     root,
+		Children: make(map[string]*UINode),
+	}
+}
+
+func (l *UINode) AppendItem(item *UINode) error {
+	// Its not necessary to verify if this ID is already a child of this Node
+	// because we do that at the UI level
+	l.Children[item.ID] = item
+	return nil
+}