remove replace directives made unnecessary by recent dep bumps

[cfryanr]

With the changes from yesterday's automatic dependency bump PR, it seems that we no longer need any replace directives in our go.mod file (for now).

Release note:

NONE

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 31.27%. Comparing base (bcb9175) to head (dc22750).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2088   +/-   ##
=======================================
  Coverage   31.27%   31.27%           
=======================================
  Files         371      371           
  Lines       61119    61119           
=======================================
  Hits        19115    19115           
  Misses      41480    41480           
  Partials      524      524           

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