File Access Info Will be Duplicated

**Is your feature request related to a problem? Please describe.**
When the new file access tutorial is ready, some information in this tutorial will be redundant.

**Describe the solution you'd like**
Will remove outdated file access episode and link to other relevant tutorials instead. Update pre-requisites and info on setup. I.e. direct to file access tutorial first.

**Additional context**
Part of a broader refresh to tutorials and the switch to rucio.