fix(settings): Remove obsolete 'send download link' link

[LZoog]

Because:

• This link no longer allows users to get a text via SMS, so we're removing it

This commit:

• Removes the link and updates copy

fixes FXA-9983

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While looking at FXA-10049 I remembered this (FXA-9983) recently filed issue and confirmed we don't want this event and want to remove the link.