Revert "Handle section breaks when pasting text from other sources"

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({