[WebApp] Remove Segment

Description

Once BizOps is comfortable with Rudder working, remove Segment from the WebApp.

QA Test Steps

None

Mana

None

Assignee

Unassigned

QA Assignee

None

Reporter

George Goldberg

Epic Link

Fix versions

Mattermost Team

Platform

Sprint

Labels

None

QA Testing Areas

None

GitHub Issue

None

Components

None
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