[CLIENT-3106] Clean up dead code

[juliannguyen4]

aerospike module's code coverage is now < 80%, so I'd like to get this up to at least 80% again

TODO

conversions.c

record_to_pyobject_cnvt_list_to_map
as_list_of_map_to_py_tuple_list
bin_strict_type_checking
as_batch_read_results_to_pyobject
batch_read_records_to_pyobject

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.58%. Comparing base (4aea102) to head (25b150e).
⚠️ Report is 2 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #817      +/-   ##
==========================================
+ Coverage   82.45%   82.58%   +0.13%     
==========================================
  Files          99       99              
  Lines       14496    14472      -24     
==========================================
  Hits        11952    11952              
+ Misses       2544     2520      -24     

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