Remove some trace methods

[lgoettgens]

They are either equal to the default implementation in AA, or already covered by the Zmod_fmpz_mat case.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.47%. Comparing base (8ce122a) to head (0032f29).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1861   +/-   ##
=======================================
  Coverage   86.46%   86.47%           
=======================================
  Files          98       98           
  Lines       36012    35982   -30     
=======================================
- Hits        31139    31116   -23     
+ Misses       4873     4866    -7     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.