[6.0] Remove deprecated db object from views

[laoneo]

Summary of Changes

Removes some deprecated database properties in views. They stayed to not break overrides during the upgrade from 3 to 4. But are not used anymore.

Testing Instructions

• Create an article
• Open the article on the front tend

Actual result BEFORE applying this Pull Request

All works.

Expected result AFTER applying this Pull Request

All works.

Link to documentations

Please select:

• Documentation link for docs.joomla.org:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org: Chapter about removed db view properties Manual#243

• No documentation changes for manual.joomla.org needed

[brianteeman]

Should this be documented ?

[laoneo]

Yes, just didn't had time.

[laoneo]

Added documentation

[Hackwar]

Can you fix the codestyle issues?

[laoneo]

done

[Quy]

I have tested this item ✅ successfully on 0b2603a

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[ghost]

I have tested this item ✅ successfully on 0b2603a

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[Quy]

RTC

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[wilsonge]

Thanks!