Remove LossRecorder

[martinkim0]

Removed LossRecorder as per https://github.com/scverse/scvi-tools/blob/main/scvi/module/base/_base_module.py#L68

[codecov]

Codecov Report

Base: 90.41% // Head: 90.42% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (4c9aed8) compared to base (47bf4a5).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1869   +/-   ##
=======================================
  Coverage   90.41%   90.42%           
=======================================
  Files         141      141           
  Lines       11099    11058   -41     
=======================================
- Hits        10035     9999   -36     
+ Misses       1064     1059    -5     

Impacted Files	Coverage Δ
scvi/module/base/__init__.py	100.00% <ø> (ø)
scvi/module/base/_base_module.py	94.14% <ø> (+1.28%)	⬆️
scvi/train/_trainingplans.py	94.43% <ø> (-0.05%)	⬇️
scvi/train/_trainrunner.py	92.72% <ø> (ø)
scvi/external/cellassign/_module.py	97.27% <100.00%> (ø)
scvi/module/_autozivae.py	80.39% <100.00%> (ø)
scvi/train/_trainer.py	100.00% <100.00%> (ø)
scvi/model/base/_log_likelihood.py	96.55% <0.00%> (-3.45%)	⬇️

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