Cleanup GenerateChangeLog command, removing unnecessary functions.

Sources/SwiftDocC/Model/Rendering/RenderNode.swift

@@ -275,26 +275,5 @@ public struct RenderNode: VariantContainer {
                 throw DecodingError.dataCorruptedError(in: container, debugDescription: "Unknown RenderNode.Kind: '\(unknown)'.")
             }
         }
-
-//        // Return the string representing this kind.
-//        //      If the kind is a symbol, return the symbol kind.
-//        public func kindString() -> String {
-//            var kind = ""
-//            
-//            switch(self) {
-//            case .article:
-//                kind = "article"
-//            case .tutorial:
-//                kind = "tutorial"
-//            case .section:
-//                kind = "section"
-//            case .overview:
-//                kind = "overview"
-//            case .symbol:
-//                kind = "symbol"
-//            }
-//            
-//            return kind
-//        }
     }
 }