Remove deprecated functions get_rcode(), get_rcode_srv(), get_rcode_ui()

[donyunardi]

Summary

We discovered during pre-release activities that the functions get_rcode(), get_rcode_srv(), and get_rcode_ui() have been deprecated. However, we cannot remove them until we release new versions of tmc, tmg, tosprey, and tgoshawk, since the current stable versions still rely on these functions.

Removal of the deprecated functions will only be possible after the release of tmc, tmg, tosprey, and tgoshawk.

Related Tasks:

• Review teal documentation before release #815
• Revert the removal of deprecated functions #827

Prerequisite

Release of tmc, tmg, tosprey, and tgoshawk.

Acceptance Criteria

• Remove deprecated functions: get_rcode(), get_rcode_srv(), and get_rcode_ui()
  • This will be similar to what we've done in Documentation fixes for release review #819
• Run R CMD Check for tmc, tmg, tosprey, and tgoshawk using updated teal (with deprecation functions removed) and make sure all green.