Merger： sortmerge去除传入类型信息

[juniaoshaonian]

去除sortMerger的类型信息

[codecov[bot]]

Codecov Report

Merging #190 (aae597a) into dev (7b1fd2b) will decrease coverage by 0.10%. The diff coverage is 66.66%.

@@            Coverage Diff             @@
##              dev     #190      +/-   ##
==========================================
- Coverage   86.07%   85.98%   -0.10%     
==========================================
  Files          43       43              
  Lines        3045     3046       +1     
==========================================
- Hits         2621     2619       -2     
- Misses        343      345       +2     
- Partials       81       82       +1     

Impacted Files	Coverage Δ
internal/merger/sortmerger/merger.go	89.90% <66.66%> (-1.41%)	:arrow_down:

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