[FE] 10-10EZ - TERA: Post-launch - Remove TERA conditionals feature toggle

[hdjustice]

Background

• Now that the TERA questions and conditional logic is permanent, we can remove the feature toggle and any other unnecessary logic from the code.

Scope

• Clean up of TERA code

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Acceptance Criteria/Definition of Done

• Removal of TERA feature toggle & other unnecessary logic has been removed from the code.

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