tools: remove unused code in doc generation tool

tools/doc/html.js includes code that looks for comments with `start-include` and `end-include` for file inclusion. This seems to be legacy code that is no longer used. The code only appears in the table-of-contents generation function. The strings `start-include` and `end-include` appear nowhere else in our tools and nowhere at all in our docs. PR-URL: #32913 Reviewed-By: Franziska Hinkelmann <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Juan José Arboleda <[email protected]> Reviewed-By: Trivikram Kamat <[email protected]> Reviewed-By: Michael Dawson <[email protected]> Reviewed-By: James M Snell <[email protected]>

Author: Trott

tools/doc/html.js

@@ -313,23 +313,11 @@ function versionSort(a, b){
 
 functionbuildToc({ filename, apilinks }){
 return(tree,file)=>{
-conststartIncludeRefRE=/^\s*<!--\[start-include:(.+)\]-->\s*$/;
-constendIncludeRefRE=/^\s*<!--\[end-include:.+\]-->\s*$/;
-constrealFilenames=[filename];
 constidCounters=Object.create(null);
 lettoc='';
 letdepth=0;
 
 visit(tree,null,(node)=>{
-// Keep track of the current filename for comment wrappers of inclusions.
-if(node.type==='html'){
-const[,includedFileName]=node.value.match(startIncludeRefRE)||[];
-if(includedFileName!==undefined)
-realFilenames.unshift(includedFileName);
-elseif(endIncludeRefRE.test(node.value))
-realFilenames.shift();
-}
-
 if(node.type!=='heading')return;
 
 if(node.depth-depth>1){
@@ -339,7 +327,7 @@ function buildToc({filename, apilinks }){
 }
 
 depth=node.depth;
-constrealFilename=path.basename(realFilenames[0],'.md');
+constrealFilename=path.basename(filename,'.md');
 constheadingText=file.contents.slice(
 node.children[0].position.start.offset,
 node.position.end.offset).trim();