chore: remove redundant words

[suchsoon]

What does this pull request do? Explain your changes. (required)

remove redundant words

Specific updates (required)

How did you test each of these updates (required)

Does this pull request close any open issues?

Checklist:

• Read the contribution guide
• make runs successfully
• All tests in ./test.sh pass
• README and other documentation updated
• Pending changelog updated

[rickstaa]

LGTM. Thanks for your contribution!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 30.41590%. Comparing base (acb69fc) to head (bbcb02a).
Report is 3 commits behind head on master.

Additional details and impacted files

@@                 Coverage Diff                 @@
##              master       #3438         +/-   ##
===================================================
- Coverage   30.41820%   30.41590%   -0.00230%     
===================================================
  Files            148         148                 
  Lines          43520       43520                 
===================================================
- Hits           13238       13237          -1     
- Misses         29506       29507          +1     
  Partials         776         776                 

Files with missing lines	Coverage Δ
core/accounting.go	96.99248% <ø> (ø)
server/broadcast.go	79.54545% <100.00000%> (ø)

... and 1 file with indirect coverage changes

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Files with missing lines	Coverage Δ
core/accounting.go	96.99248% <ø> (ø)
server/broadcast.go	79.54545% <100.00000%> (ø)

... and 1 file with indirect coverage changes

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