feat: LSDV-4708: Removed FF_DEV_1170 outliner feature flag and corresponding components

[Travis1282]

…switched on

PR fulfills these requirements

• Commit message(s) and PR title follows the format [fix|feat|ci|chore|doc]: TICKET-ID: Short description of change made ex. fix: DEV-XXXX: Removed inconsistent code usage causing intermittent errors
• Tests for the changes have been added/updated (for bug fixes/features)
• Docs have been added/updated (for bug fixes/features)
• Best efforts were made to ensure docs/code are concise and coherent (checked for spelling/grammatical errors, commented out code, debug logs etc.)
• Self-reviewed and ran all changes on a local instance (for bug fixes/features)

Change has impacts in these area(s)

(check all that apply)

• Product design
• Frontend

Describe the reason for change

Outliner is now the default ui

What does this fix?

Removes unused code

What is the new behavior?

Should be no behavior change

What is the current behavior?

Outliner is on because of a feature flag

What libraries were added/updated?

N/A

Does this change affect performance?

No

Does this change affect security?

No

What alternative approaches were there?

N/A

What feature flags were used to cover this change?

N/A

Does this PR introduce a breaking change?

(check only one)

• Yes, and covered entirely by feature flag(s)
• Yes, and covered partially by feature flag(s)
• No
• Not sure (briefly explain the situation below)

What level of testing was included in the change?

(check all that apply)

• e2e
• integration
• unit

Which logical domain(s) does this change affect?

Frontend Regions/Outliner