docs(chip): remove duplicated dragging section

[teodosiah]

Closes #5998

Checklist:

• check topic's TOC/menu and paragraph headings
• Include TOC topic labels in topic content has a valuable update, it's new or considered as preview\ beta
• link to other topics using ../relative/path.md
• at the References section at the end of the topic add links to topics, samples, etc
• reference API documentation instead of adding a section with API

• use valid component names - [Data] Grid, IgxSelectComponent, <igx-combo>
• use spell checker tool (VS Code, Grammarly, Microsoft Editor)
• add inline code blocks for the names of classes / tags / properties
• add language descriptor for the code blocks
• check broken links (use browser add-on)
• check if sample is working and fully visible in the topic
• check if sample is working and fully visible in the StackBlitz
• check if code blocks match the code in StackBlitz demo

• follow SEO guidelines to fill topic's metadata (SEO guidelines)

• do not resolve requested changes (leave that to the reviewer)
• add pending-localization label when the review of the PR is done
• add a member from the localization team to translate it

[dkamburov]

I don't see duplicate section of this one. We'll lose this content if removed.

[teodosiah]

The chip draggable property is also mentioned in the Reorder Chips section

[dkamburov]

Added @skrustev for a review, he can tell if this section was added for a reason

[skrustev]

I think it is fine for the section to be left as is. It is mentioned with the Chip Area, but it is a standalone thing to the chip itself. The part describing the demo though should definitely be somewhere else imo. I think moving it to a separate section after the Chip Templates section should suffice.

I noticed though the draggable link points to the removable property.
Also I think having a link to the Chip Area Reorder Chips section here would also be nice. The IgxChipsAreaComponent note says it is needed, but that is not required. The user could implement its own thing even without the Chip Area. So I think mentioning it as an option with the link to the Reorder Chips would be much better replacement for the note.

[gedinakova]

@teodosiah @skrustev Looking into the new structure, isn't it better if we also add a section for this demo, similar to what we have in Chip Area and Styling sections:

So I suggest, adding a demo section at the bottom of Using the Angular Chip Component that starts with (but making it normal, not bold):

[gedinakova]

I'd rather have an aditional Demo section under Using the Angular Chip Component.