[WIP] Remove inferred jar models handler

[msridhar]

Not ready to land

[codecov]

Codecov Report

Attention: Patch coverage is 92.36641% with 10 lines in your changes missing coverage. Please review.

Project coverage is 87.98%. Comparing base (0a5fa0f) to head (a510fb4).
Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
...m/uber/nullaway/handlers/LibraryModelsHandler.java	87.93%	3 Missing and 4 partials ⚠️
...llaway/jarinfer/DefinitelyDerefedParamsDriver.java	95.55%	2 Missing ⚠️
...ava/com/uber/nullaway/generics/GenericsChecks.java	96.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1079      +/-   ##
============================================
+ Coverage     87.86%   87.98%   +0.11%     
+ Complexity     2211     2199      -12     
============================================
  Files            85       84       -1     
  Lines          7188     7180       -8     
  Branches       1425     1427       +2     
============================================
+ Hits           6316     6317       +1     
+ Misses          438      434       -4     
+ Partials        434      429       -5     

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