Make multiple changes to SEI Page

[data-sync-user]

URL: https://www.mozilla.org/en-US/impact/

Changes:

1. Remove “Help the Planet” and “Fight anti-black racism” cards/links. Don’t replace with anything.
2. Update the format of the links to past reports (at the bottom of the page) to be table-based and scalable. Chat with [~accountid:712020:4027e6a0-795e-490b-99fa-b5ab139e6a34] and [~accountid:62fd8813142d0c981fcdfbf6] to align on the design.

┆Issue is synchronized with this Jira Task ┆Priority: P2 ┆Sprint: Backlog