[$20] Remove support of `enrich` query param for `GET /taas-teams/me` endpoint

[maxceem]

We found an issue with using enrich query param of GET /taas-teams/me?enrich= endpoint, see #154 (comment).

So we have to remove support of enrich for the GET /taas-teams/me endpoint. And we always have to get user data from u-bahn with enrich=true.

• remove the support of enrich query param from API, Swagger, Postman, Joi, and so on.
• we have to always get data from u-bahn with enrich=true if we filter by externalProfile.externalId

[maxceem]

Challenge https://www.topcoder.com/challenges/3fe7d3a3-c9de-4252-b766-f162ebc687bb has been created for this ticket.

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[maxceem]

@imcaizheng would you like to pick up this?

[maxceem]

@imcaizheng I had to revert PR for adding me endpoint #161 by this PR #171. Because we need to keep dev branch fully workable now.

You can revert my revert again in your branch and after update it as per this issue description. I hope it's not confusing.

[maxceem]

Challenge https://www.topcoder.com/challenges/3fe7d3a3-c9de-4252-b766-f162ebc687bb has been assigned to aaron2017.

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[imcaizheng]

@maxceem Here is a new PR #172