Make choose_analyses pass on base and be an abstract method

[mgarrard]

Summary: The implementation of choose_analyses should always be done depending on other attributes, and we have those exisiting methods elsewhere. This seems like it was initially implemented this way during development of the stack and never cleaned up - just cleaning it up as i go.

Differential Revision: D70641832

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D70641832

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 96.02%. Comparing base (36d55fc) to head (c1c38d4).

Files with missing lines	Patch %	Lines
ax/service/utils/analysis_base.py	66.66%	1 Missing :warning:

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3469   +/-   ##
=======================================
  Coverage   96.02%   96.02%           
=======================================
  Files         539      539           
  Lines       52886    52887    +1     
=======================================
+ Hits        50785    50786    +1     
  Misses       2101     2101           

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