Migrate deprecated json file to KDL (microsoft#2214)

Author: Bashamega

inputfiles/deprecatedMessage.json

@@ -0,0 +1,4 @@
+interface PerformanceTiming deprecated="This interface is deprecated in the Navigation Timing Level 2 specification. Please use the PerformanceNavigationTiming interface instead."
+interface PerformanceNavigation deprecated="This interface is deprecated in the Navigation Timing Level 2 specification. Please use the PerformanceNavigationTiming interface instead."
+interface AudioProcessingEvent deprecated="As of the August 29 2014 Web Audio API spec publication, this feature has been marked as deprecated, and is soon to be replaced by AudioWorklet."
+interface ScriptProcessorNode deprecated="As of the August 29 2014 Web Audio API spec publication, this feature has been marked as deprecated, and was replaced by AudioWorklet (see AudioWorkletNode)."

inputfiles/patches/deprecated.kdl

@@ -96,7 +96,6 @@ async function emitDom() {
   const addedItems = await readInputJSON("addedTypes.jsonc");
   const patches = await readPatches();
   const comments = await readInputJSON("comments.json");
-  const deprecatedInfo = await readInputJSON("deprecatedMessage.json");
   const documentationFromMDN = await generateDescriptions();
   const removedItems = await readInputJSON("removedTypes.jsonc");
 
@@ -143,24 +142,6 @@ async function emitDom() {
     return idl;
   }
 
-  function mergeDeprecatedMessage(
-    idl: Browser.WebIdl,
-    descriptions: Record<string, string>,
-  ) {
-    const namespaces = arrayToMap(
-      idl.namespaces!,
-      (i) => i.name,
-      (i) => i,
-    );
-    for (const [key, value] of Object.entries(descriptions)) {
-      const target = idl.interfaces!.interface[key] || namespaces[key];
-      if (target) {
-        target.deprecated = value;
-      }
-    }
-    return idl;
-  }
-
   /// Load the input file
   let webidl: Browser.WebIdl = {
     events: await getInterfaceToEventMap(),
@@ -233,7 +214,6 @@ async function emitDom() {
   webidl = merge(webidl, overriddenItems);
   webidl = merge(webidl, patches);
   webidl = merge(webidl, comments);
-  webidl = mergeDeprecatedMessage(webidl, deprecatedInfo);
   for (const name in webidl.interfaces!.interface) {
     const i = webidl.interfaces!.interface[name];
     if (i.overrideExposed) {