Remove some internal functions

[fingolfin]

No description provided.

[lgoettgens]

Even though these are internal, I think they can create confusion with the new is_terse and terse functions introduced in #1677. What about renaming these here to set_terse_level or something to make clear that they reason about :terse_level and not :terse?

[fingolfin]

I don't think the potential for confusion is that high. But anyway, I've removed those functions completely.

[lgoettgens]

Thanks!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.92%. Comparing base (99ef240) to head (17878da).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1679      +/-   ##
==========================================
- Coverage   86.92%   86.92%   -0.01%     
==========================================
  Files         116      116              
  Lines       29622    29618       -4     
==========================================
- Hits        25750    25746       -4     
  Misses       3872     3872              

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[lgoettgens]

The two failures in OscarCI-matching are Nemocas/Nemo.jl#1722. OscarCI-release had some garbage collection issue and I restarted.