Remove link for stale youtube video playlist (#1492)

Author: ramya-stripe

README.md

@@ -13,8 +13,6 @@ API.
 
 See the [Python API docs](https://stripe.com/docs/api?lang=python).
 
-See [video demonstrations][youtube-playlist] covering how to use the library.
-
 ## Installation
 
 You don't need this source code unless you want to modify the package. If you just
@@ -401,7 +399,6 @@ just format
 [poetry]: https://github.com/sdispater/poetry
 [stripe-mock]: https://github.com/stripe/stripe-mock
 [idempotency-keys]: https://stripe.com/docs/api/idempotent_requests?lang=python
-[youtube-playlist]: https://www.youtube.com/playlist?list=PLy1nL-pvL2M55YVn0mGoQ5r-39A1-ZypO
 
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