CLEAN: Removed unnecessary and non-informative print

[Strateus]

Fixes this: #4118

[coveralls]

Coverage increased (+0.06%) to 83.683% when pulling 058cd2f on Strateus:print_removed into ed6631a on statsmodels:master.

[codecov-io]

Codecov Report

Merging #4814 into master will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4814      +/-   ##
==========================================
- Coverage   81.14%   81.14%   -0.01%     
==========================================
  Files         581      581              
  Lines       89895    89900       +5     
  Branches    10041    10041              
==========================================
+ Hits        72944    72945       +1     
- Misses      14673    14676       +3     
- Partials     2278     2279       +1

Impacted Files	Coverage Δ
statsmodels/base/data.py	90.26% <ø> (-0.03%)	⬇️
statsmodels/tsa/statespace/sarimax.py	93.69% <0%> (-0.48%)	⬇️
statsmodels/stats/descriptivestats.py	24.13% <0%> (ø)	⬆️

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[jbrockmendel]

Pls delete commented-out code

[ChadFulton]

Thanks @Strateus!