Revert "Handle section breaks when pasting text from other sources (#210

)" (#213)

This reverts commit 499103e.

blocks/edit/prose/index.js

@@ -1,10 +1,8 @@
 /* eslint-disable max-classes-per-file */
 import {
- DOMParser,
  EditorState,
  EditorView,
  Schema,
- TextSelection,
  baseSchema,
  history,
  buildKeymap,
@@ -19,8 +17,6 @@ import {
  liftListItem,
  sinkListItem,
  gapCursor,
- InputRule,
- inputRules,
  Y,
  WebsocketProvider,
  ySyncPlugin,
@@ -35,7 +31,6 @@ import prose2aem from '../../shared/prose2aem.js';
 import menu from './plugins/menu.js';
 import imageDrop from './plugins/imageDrop.js';
 import linkConverter from './plugins/linkConverter.js';
-import sectionPasteHandler from './plugins/sectionPasteHandler.js';
 import { COLLAB_ORIGIN, getDaAdmin } from '../../shared/constants.js';
 import { addLocNodes, getLocClass } from './loc-utils.js';
 
@@ -206,36 +201,6 @@ function generateColor(name, hRange = [0, 360], sRange = [60, 80], lRange = [40,
  return `#${f(0)}${f(8)}${f(4)}`;
 }
 
-function getDashesInputRule() {
- return new InputRule(
- /^---[\n]$/,
- (state, match, start, end) => {
- const div = document.createElement('div');
- div.append(document.createElement('hr'));
- const newNodes = DOMParser.fromSchema(state.schema).parse(div);
-
- const selection = TextSelection.create(state.doc, start, end);
- dispatchTransaction(state.tr.setSelection(selection).replaceSelectionWith(newNodes));
- },
- );
-}
-
-// This function returns a modified inputrule plugin that triggers when the regex in the
-// rule matches and the Enter key is pressed
-function getInputRulesPlugin() {
- const irsplugin = inputRules({ rules: [getDashesInputRule()] });
-
- const hkd = (view, event) => {
- if (event.key !== 'Enter') return false;
- const { $cursor } = view.state.selection;
- if ($cursor) return irsplugin.props.handleTextInput(view, $cursor.pos, $cursor.pos, '\n');
- return false;
- };
- irsplugin.props.handleKeyDown = hkd; // Add the handleKeyDown function
-
- return irsplugin;
-}
-
 export default function initProse({ editor, path }) {
  // Destroy ProseMirror if it already exists - GH-212
  if (window.view) delete window.view;
@@ -296,10 +261,8 @@ export default function initProse({ editor, path }) {
  menu,
  imageDrop(schema),
  linkConverter(schema),
- sectionPasteHandler(schema),
  columnResizing(),
  tableEditing(),
- getInputRulesPlugin(),
  keymap(buildKeymap(schema)),
  keymap(baseKeymap),
  keymap({