[TPU] Remove error check for IterableDatasets

[gkroiz]

What does this PR do?

Fixes #17321

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[codecov]

Codecov Report

Merging #17331 (5cb313e) into master (0c02c44) will increase coverage by 17%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff            @@
##           master   #17331     +/-   ##
=========================================
+ Coverage      43%      59%    +17%     
=========================================
  Files         430      410     -20     
  Lines       31603    31368    -235     
=========================================
+ Hits        13459    18562   +5103     
+ Misses      18144    12806   -5338