Minor code and documentation cleanup. (#4664)

src/main/java/net/minecraftforge/client/IRenderContextHandler.java

@@ -19,14 +19,18 @@
 
 package net.minecraftforge.client;
 
+/**
+ * @deprecated TODO remove in 1.13. This has never been used
+ */
+@Deprecated
 public interface IRenderContextHandler
 {
     /** Run before the specified rendering context.
      */
-    public void beforeRenderContext();
+    void beforeRenderContext();
 
     /** Run after the specified rendering context.
      */
-    public void afterRenderContext();
+    void afterRenderContext();
 }