remove redundant heap

[ucwong]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (5f8c2d1) 47.44% compared to head (aae0882) 47.45%.
Report is 479 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1912   +/-   ##
=======================================
  Coverage   47.44%   47.45%           
=======================================
  Files         568      568           
  Lines       68782    68781    -1     
=======================================
+ Hits        32636    32638    +2     
+ Misses      33607    33601    -6     
- Partials     2539     2542    +3     

Files	Coverage Δ
core/txpool/list.go	88.85% <100.00%> (-0.04%)	⬇️

... and 16 files with indirect coverage changes