Remove maintenance scripts that now live in bety

[infotroph]

Description

Fixes #2314. Both scripts already exist in the bety project, so nothing to do on that end.

@robkooper @Chris-Schnaufer While we're at it, are there other scripts we should remove in this PR? update.mysql.sh and update.psql.sh look like possible candidates.

Motivation and Context

Review Time Estimate

• Immediately
• Within one week
• When possible

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My change requires a change to the documentation.
• I have updated the CHANGELOG.md.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[ashiklom]

I'm all about removing code. Let's do it more often!

Thanks for checking this.

[robkooper]

Some scripts that can be removed:

• check.dependencies.sh
• install.dependencies.R (replaced by Makefile and generate_dependencies.R)
• update.mysql.sh
• update.psql.sh
• dump.pgsql.sh
• setversion.sh

Maybe delete:

• install_deps.R

[infotroph]

@robkooper looks like install_deps.R was part of the first round of Docker implementation. Is there a chance it'll be useful there in the future, or have you settled on a different approach?

[infotroph]

On a few moments' further thought, I think install_deps.R can definitely go -- it comes close enough to doing the same thing the Makefile does using remotes::install_deps does that I don't see a need to maintain a separate implementation.