Audit READMEs of repos migrated from edx-solutions to openedx

[kdmccormick]

Context

Repos such as xblock-drag-and-drop-v2, which have been moved in from the edx-solutions organizations, have statements in their READMEs such as "this repository will be moved to the edx organization in April 2021" or "this repository will be archived in April 2021".

Acceptance Criteria

For each repository migrated in from edx-solutions, check out its README.

• If it says it's moving to the edx organization, remove that notice.
• If it says it's being archived, then:
  • archive it (if that's the obvious course of action),
  • remove the notice (if it's clear we still care about it),
  • create a DEPR ticket for it (if it's clear we want to archive it, but need to get community agreement first), or
  • create a backlog issue to follow up on the repo (if it's not clear what to do).

[feanil]

I looked through all the repos listed and it looked like only one still had this issue: openedx/xblock-google-drive#62

[feanil]

The above PR has now been merged so this should be all set.