Remove support for non-HTML doctypes

Related to syntax-tree/hast@2.4.0

Author: wooorm

lib/index.js

@@ -191,16 +191,11 @@ function root(ctx, ast, children) {
  * Transform a doctype.
  *
  * @type {Handler}
- * @param {P5Doctype} ast
  * @returns {Doctype}
  */
-function doctype(_, ast) {
-  return {
-    type: 'doctype',
-    name: ast.name || '',
-    public: ast.publicId || null,
-    system: ast.systemId || null
-  }
+function doctype() {
+  // @ts-ignore Types are out of date.
+  return {type: 'doctype'}
 }
 
 /**

test/fixtures/doctype-nameless/index.json

@@ -3,9 +3,6 @@
   "children": [
     {
       "type": "doctype",
-      "name": "",
-      "public": null,
-      "system": null,
       "position": {
         "start": {
           "line": 1,

test/fixtures/doctype-quirksmode-ibm/index.json

@@ -3,9 +3,6 @@
   "children": [
     {
       "type": "doctype",
-      "name": "html",
-      "public": null,
-      "system": "http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd",
       "position": {
         "start": {
           "line": 1,

test/fixtures/doctype/index.json

@@ -3,9 +3,6 @@
   "children": [
     {
       "type": "doctype",
-      "name": "html",
-      "public": null,
-      "system": null,
       "position": {
         "start": {
           "line": 1,

test/fixtures/simple/index.json

@@ -3,9 +3,6 @@
   "children": [
     {
       "type": "doctype",
-      "name": "html",
-      "public": null,
-      "system": null,
       "position": {
         "start": {
           "line": 1,

test/fixtures/template/index.json

@@ -3,9 +3,6 @@
   "children": [
     {
       "type": "doctype",
-      "name": "html",
-      "public": null,
-      "system": null,
       "position": {
         "start": {
           "line": 1,