remove last row if 0, but not the second to last row

[peterdudfield]

Pull Request

Description

solve pvoutput.org bug remove last data point if 0, if second to last point is not zero

Fixes #

How Has This Been Tested?

• normal unittests

• test this behaviour

• [ ] Yes

If your changes affect data processing, have you plotted any changes? i.e. have you done a quick sanity check?

• [ ] Yes

Checklist:

• [x] My code follows OCF's coding style guidelines
• [x] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [x] I have added tests that prove my fix is effective or that my feature works
• [ ] I have checked my code and corrected any misspellings

[codecov-commenter]

Codecov Report

Merging #27 (5ac0f3e) into main (e2f7292) will increase coverage by 1.98%. The diff coverage is 92.85%.

@@            Coverage Diff             @@
##             main      #27      +/-   ##
==========================================
+ Coverage   94.18%   96.17%   +1.98%     
==========================================
  Files           4        4              
  Lines         172      183      +11     
==========================================
+ Hits          162      176      +14     
+ Misses         10        7       -3     

Impacted Files	Coverage Δ
pvconsumer/utils.py	93.54% <92.00%> (-6.46%)	:arrow_down:
pvconsumer/app.py	95.94% <100.00%> (+5.14%)	:arrow_up:

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