remove word dependency to remove GPL license

[zyxxoo]

fix #1632

[codecov]

Codecov Report

Merging #1998 (d1efebc) into master (66b1674) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1998      +/-   ##
============================================
- Coverage     70.53%   70.52%   -0.01%     
  Complexity      976      976              
============================================
  Files           454      453       -1     
  Lines         39051    39024      -27     
  Branches       5557     5556       -1     
============================================
- Hits          27543    27522      -21     
+ Misses         8807     8802       -5     
+ Partials       2701     2700       -1     

Impacted Files	Coverage Δ
.../com/baidu/hugegraph/analyzer/AnalyzerFactory.java	31.25% <ø> (-2.09%)	⬇️
...n/java/com/baidu/hugegraph/config/CoreOptions.java	99.46% <ø> (ø)
...hugegraph/backend/store/raft/rpc/RpcForwarder.java	71.18% <0.00%> (+1.69%)	⬆️
...va/com/baidu/hugegraph/task/ServerInfoManager.java	75.00% <0.00%> (+1.74%)	⬆️

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