Improved: Marked unused HTML renderers as deprecated (OFBIZ-11927)

Upcoming Branch is actually another name for trunk. It's always evolving and
never released. Better put a date when deprecating a Class or method. Else you
have no idea when it was deprecated, apart referring to git-blame.
diff --git a/framework/widget/src/main/java/org/apache/ofbiz/widget/renderer/html/HtmlMenuRendererImage.java b/framework/widget/src/main/java/org/apache/ofbiz/widget/renderer/html/HtmlMenuRendererImage.java
index 8ee989d..4cb26f6 100644
--- a/framework/widget/src/main/java/org/apache/ofbiz/widget/renderer/html/HtmlMenuRendererImage.java
+++ b/framework/widget/src/main/java/org/apache/ofbiz/widget/renderer/html/HtmlMenuRendererImage.java
@@ -36,7 +36,7 @@
 /**
  * Widget Library - HTML Menu Renderer implementation
  *
- * @deprecated since Upcoming Branch
+ * @deprecated since 2021-01-14
  */
 @Deprecated
 public class HtmlMenuRendererImage extends HtmlMenuRenderer {
diff --git a/framework/widget/src/main/java/org/apache/ofbiz/widget/renderer/html/HtmlMenuWrapperImage.java b/framework/widget/src/main/java/org/apache/ofbiz/widget/renderer/html/HtmlMenuWrapperImage.java
index 4205e27..c13614b 100644
--- a/framework/widget/src/main/java/org/apache/ofbiz/widget/renderer/html/HtmlMenuWrapperImage.java
+++ b/framework/widget/src/main/java/org/apache/ofbiz/widget/renderer/html/HtmlMenuWrapperImage.java
@@ -37,7 +37,7 @@
 /**
  * Widget Library - HTML Menu Wrapper class - makes it easy to do the setup and render of a menu
  *
- * @deprecated since Upcoming Branch
+ * @deprecated since 2021-01-14
  */
 @Deprecated
 public class HtmlMenuWrapperImage extends HtmlMenuWrapper {
diff --git a/framework/widget/src/main/java/org/apache/ofbiz/widget/renderer/html/HtmlTreeRenderer.java b/framework/widget/src/main/java/org/apache/ofbiz/widget/renderer/html/HtmlTreeRenderer.java
index 5d1196a..9584134 100644
--- a/framework/widget/src/main/java/org/apache/ofbiz/widget/renderer/html/HtmlTreeRenderer.java
+++ b/framework/widget/src/main/java/org/apache/ofbiz/widget/renderer/html/HtmlTreeRenderer.java
@@ -48,7 +48,7 @@
 /**
  * Widget Library - HTML Tree Renderer implementation
  *
- * @deprecated since Upcoming Branch
+ * @deprecated since 2021-01-14
  */
 @Deprecated
 public class HtmlTreeRenderer extends HtmlWidgetRenderer implements TreeStringRenderer {