Revert "Merge branch 'master' of github.com:PyClass/pyPandoc-nbwiki"

This reverts commit 17666022be37a8fc379f75f8d5d782c9ddf4ea9b, reversing
changes made to 41ba6cdd971f12c7ad2d396a4b284d997ff9dd2a.
Revert "20 sorting algos lesson plan and code bits"

This reverts commit bd7d120b9f9fa78c569974b012138a8488ac134b.