Remove paragraph-indexing module

[adamyy]

#1371 (comment)

[codecov]

Codecov Report

Merging #1375 into master will increase coverage by 0.23%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1375      +/-   ##
============================================
+ Coverage     53.41%   53.64%   +0.23%     
- Complexity      817      828      +11     
============================================
  Files           154      154              
  Lines          8627     8627              
  Branches       1224     1224              
============================================
+ Hits           4608     4628      +20     
+ Misses         3641     3622      -19     
+ Partials        378      377       -1     

Impacted Files	Coverage Δ	Complexity Δ
...anserini/ltr/feature/base/PMIFeatureExtractor.java	86.53% <0.00%> (+1.92%)	13.00% <0.00%> (+1.00%)
...java/io/anserini/ltr/feature/CountBigramPairs.java	89.61% <0.00%> (+24.67%)	33.00% <0.00%> (+10.00%)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 8bc5976...3b2f97b. Read the comment docs.