Disable LDAP ETL group flattening due to timeout

[alyiwang]

No description provided.

[coveralls]

Coverage remained the same at 27.633% when pulling c6b44d9 on alyiwang:master into 479f575 on linkedin:master.

[codecov-io]

Codecov Report

Merging #1320 into master will decrease coverage by 0.1%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #1320      +/-   ##
=========================================
- Coverage   51.81%   51.7%   -0.11%     
=========================================
  Files         178     178              
  Lines        3673    3673              
  Branches      808     808              
=========================================
- Hits         1903    1899       -4     
- Misses       1770    1774       +4

Impacted Files	Coverage Δ
wherehows-web/app/components/purge-policy.ts	81.48% <0%> (-14.82%)	⬇️

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