fix mockgen issue

[yutongp]

remove cycling dependency

[codecov]

Codecov Report

Merging #1720 into master will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1720      +/-   ##
==========================================
- Coverage   55.19%   55.18%   -0.02%     
==========================================
  Files         155      155              
  Lines       13494    13494              
==========================================
- Hits         7448     7446       -2     
- Misses       5071     5072       +1     
- Partials      975      976       +1

Impacted Files	Coverage Δ
db/trie/extensionnode.go	57.62% <0%> (-1.7%)	⬇️

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