Revert anchors links feature

Anchor links are out of scope for this component. Anchor links are best
handled dynamically, for example with static HTML generators, or hand
-coded.

This reverts commit ff843b4.

Author: rg-wood

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "vellum-doc",
-  "version": "0.6.0",
+  "version": "0.7.0",
   "description": "A simple document web component for web publishing",
   "main": "vellum-doc.js",
   "module": "vellum-doc.js",

package.json

@@ -97,21 +97,6 @@ export class VellumDocument extends LitElement {
     })
   }
 
-  anchorHeadings() {
-    this.headings.forEach(heading => {
-      const spacing = document.createTextNode(' ')
-      heading.append(spacing)
-
-      const anchor = document.createElement('a')
-      anchor.href = `#${heading.id}`
-      anchor.innerHTML = '#'
-      anchor.className = 'anchor'
-      anchor.title = heading.textContent ? heading.textContent : ''
-
-      heading.append(anchor)
-    })
-  }
-
   override render() {
     return html`
       <div id="sidebar">
@@ -141,10 +126,6 @@ export class VellumDocument extends LitElement {
         html`<a href="#${id}">${heading}</a>`
     )
   }
-
-  override updated() {
-    this.anchorHeadings()
-  }
 }
 
 declare global {