[website] removed redundant pills as summary from docs

[ilyabrower]

Motivation and Context

Since a new component has been introduced and the example featuring custom "pills" was removed, I've also removed the corresponding documentation.

How has this been tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality to not work as expected).
• Nice improve.

Checklist:

• I have updated the documentation accordingly.
• I have added new tests on added of fixed functionality.