flake8 fixes

[ewu63]

Purpose

• fix flake8
• no longer install/test in place

Type of change

What types of change is it? Select the appropriate type(s) that describe this PR

• [ ] Bugfix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (non-backwards-compatible fix or feature)
• [ ] Code style update (formatting, renaming)
• [ ] Refactoring (no functional changes, no API changes)
• [ ] Documentation update
• [x] Maintenance update
• [ ] Other (please describe)

Testing

Existing tests

Checklist

Put an x in the boxes that apply.

• [x] I have run flake8 and black to make sure the code adheres to PEP-8 and is consistently formatted
• [x] I have run unit and regression tests which pass locally with my changes
• [ ] I have added new tests that prove my fix is effective or that my feature works
• [ ] I have added necessary documentation

[codecov[bot]]

Codecov Report

Merging #32 (d5e35e7) into master (3260102) will not change coverage. The diff coverage is 60.00%.

@@           Coverage Diff           @@
##           master      #32   +/-   ##
=======================================
  Coverage   60.55%   60.55%           
=======================================
  Files           5        5           
  Lines        1610     1610           
=======================================
  Hits          975      975           
  Misses        635      635           

Impacted Files	Coverage Δ
pyspline/pyCurve.py	51.87% <50.00%> (ø)
pyspline/pySurface.py	63.24% <66.66%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 3260102...d5e35e7. Read the comment docs.