Update UG explain deletion

[nicktohzyu]

closes #304

[codecov-io]

Codecov Report

Merging #305 (e31d529) into master (d0a7e5c) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #305   +/-   ##
=========================================
  Coverage     55.45%   55.45%           
  Complexity      702      702           
=========================================
  Files           150      150           
  Lines          2907     2907           
  Branches        336      336           
=========================================
  Hits           1612     1612           
  Misses         1182     1182           
  Partials        113      113           

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[zyifanz]

LGTM!