chore: remove required ci with java8 by Pengzna · Pull Request #2503 · apache/hugegraph

@@              Coverage Diff              @@
##             master    #2503       +/-   ##
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- Coverage     66.31%   53.26%   -13.05%     
+ Complexity      829      545      -284     
=============================================
  Files           511      511               
  Lines         42649    42649               
  Branches       5942     5942               
=============================================
- Hits          28281    22717     -5564     
- Misses        11557    17489     +5932     
+ Partials       2811     2443      -368