Remove all type annotations for consistency.

[hertschuh]

Some tools don't like the mix of code with and without type hints.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.96%. Comparing base (617b821) to head (580fcc9).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #20762      +/-   ##
==========================================
- Coverage   81.96%   81.96%   -0.01%     
==========================================
  Files         554      554              
  Lines       51658    51656       -2     
  Branches     7996     7996              
==========================================
- Hits        42344    42342       -2     
  Misses       7367     7367              
  Partials     1947     1947              

Flag	Coverage Δ
keras	81.79% <100.00%> (-0.01%)	⬇️
keras-jax	64.03% <66.66%> (+<0.01%)	⬆️
keras-numpy	58.91% <66.66%> (+<0.01%)	⬆️
keras-openvino	29.95% <66.66%> (+<0.01%)	⬆️
keras-tensorflow	64.73% <100.00%> (+<0.01%)	⬆️
keras-torch	64.07% <100.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

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