Remove authorized quote denom validation

[iboss-ptk]

Closes: #CHAIN-616

What is the purpose of the change

Remove the check to confirm that a quote asset is in the whitelist. Deprecated the field.

Testing and Verifying

Unit tests are updated.

Documentation and Release Note

• [x] Does this pull request introduce a new feature or user-facing behavior changes?
• [x] Changelog entry added to Unreleased section of CHANGELOG.md?

Where is the change documented?

• [x] Specification (x/{module}/README.md)
• [ ] Osmosis documentation site
• [ ] Code comments?
• [ ] N/A