chore: Remove safe-json-parse (#8790)

## Description
Removes an old unmaintained dependency that isn't needed any more.

## Specific Changes proposed
Replace safe-json-parse with `JSON.parse`

## Requirements Checklist
- [x] Feature implemented / Bug fixed
- [ ] If necessary, more likely in a feature request than a bug fix
- [x] Change has been verified in an actual browser (Chrome, Firefox,
IE)
  - [ ] Unit Tests updated or fixed
  - [ ] Docs/guides updated
- [ ] Example created ([starter template on
JSBin](https://codepen.io/gkatsev/pen/GwZegv?editors=1000#0))
- [x] Has no DOM changes which impact accessiblilty or trigger warnings
(e.g. Chrome issues tab)
  - [x] Has no changes to JSDoc which cause `npm run docs:api` to error
- [ ] Reviewed by Two Core Contributors

test/unit/setup.test.js

@@ -1,5 +1,7 @@
 /* eslint-env qunit */
 import TestHelpers from './test-helpers.js';
+import sinon from 'sinon';
+import window from 'global/window';
 
 QUnit.module('Setup');
 
@@ -19,3 +21,20 @@ QUnit.test('should set options from data-setup even if autoSetup is not called b
   assert.ok(player.options_.playsinline === true);
   player.dispose();
 });
+
+QUnit.test('should log an error if data-setup has invalid JSON', function(assert) {
+  const logError = sinon.spy(window.console, 'error');
+
+  const el = TestHelpers.makeTag();
+
+  el.setAttribute(
+    'data-setup',
+    "{'controls': true}"
+  );
+
+  const player = TestHelpers.makePlayer({}, el);
+
+  assert.ok(logError.calledWith('VIDEOJS:', 'ERROR:', 'data-setup'));
+  player.dispose();
+  window.console.error.restore();
+});