Erroneous warnings about deprecated options when using parse()

**Marked version:**
5.0.0

**Describe the bug**
Calling `parse` emits erroneous warnings about deprecated options that are not actually being used.

**To Reproduce**
1. Install `marked@5.0.0`
2. Run `require('marked').parse('foo')` in REPL
3. Observe warnings

**Expected behavior**
The warnings should only be emitted for deprecated options that I am using.
