fix(DLQ): Remove DLQ limits in all Snuba consumers

[ayirr7]

DLQ limit calculations can be unclear and can cause the consumer to crash. We can remove the limits to avoid this case.

[lynnagara]

Can you update this in the python consuemr too?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.85%. Comparing base (7ebaf2a) to head (2944ccc).

✅ All tests successful. No failed tests found ☺️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5675   +/-   ##
=======================================
  Coverage   89.85%   89.85%           
=======================================
  Files         900      900           
  Lines       43747    43747           
  Branches      301      301           
=======================================
  Hits        39310    39310           
  Misses       4395     4395           
  Partials       42       42           

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[ayirr7]

Tested locally by running snuba devserver and sample DLQ-ing some messages.