Removes second layer of GZIP auto-decompression.

[deirdresama]

Description of changes: Removes second layer of GZIP auto-decompression.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.91%. Comparing base (3c1b6b1) to head (f90f28b).
⚠️ Report is 154 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1160      +/-   ##
============================================
+ Coverage     67.23%   67.91%   +0.68%     
- Complexity     5484     5665     +181     
============================================
  Files           159      160       +1     
  Lines         23025    23370     +345     
  Branches       4126     4204      +78     
============================================
+ Hits          15481    15872     +391     
+ Misses         6262     6194      -68     
- Partials       1282     1304      +22     

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