Correct indenting in ePBL_column

[Hallberg-NOAA]

Corrected the indenting in most of the lines of ePBL_column to respect the MOM6 2-space indenting convention, and eliminated the comment explaining why the incorrect indenting had previously been retained to facilitate the review of a pull request with substantial actual changes in this routine. Apart from a single comment that was removed, only white space is changed, and all answers are bitwise identical.

(When reviewing the code changes in this pull request, I recommend the use of the "Hide whitespace" setting!)

[codecov]

Codecov Report

Attention: Patch coverage is 47.38462% with 171 lines in your changes missing coverage. Please review.

Project coverage is 38.10%. Comparing base (9924a19) to head (8f7ebe2).

Files with missing lines	Patch %	Lines
...c/parameterizations/vertical/MOM_energetic_PBL.F90	47.38%	128 Missing and 43 partials ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##           dev/gfdl     #836   +/-   ##
=========================================
  Coverage     38.10%   38.10%           
=========================================
  Files           298      298           
  Lines         87644    87644           
  Branches      16418    16418           
=========================================
  Hits          33400    33400           
  Misses        48226    48226           
  Partials       6018     6018           

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[marshallward]

I agree with the indentation change, and overall the style was otherwise preserved.

[Hallberg-NOAA]

This PR has passed pipeline testing at https://gitlab.gfdl.noaa.gov/ogrp/mom6ci/MOM6/-/pipelines/26445.