CLN: remove numeric/numarrays support

[snowman2]

These have been phased out by numpy.

• https://wiki.python.org/moin/NumArray
• https://en.wikipedia.org/wiki/NumPy#History

[codecov]

Codecov Report

Merging #908 (30471f5) into master (8c63acf) will increase coverage by 0.38%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #908      +/-   ##
==========================================
+ Coverage   95.22%   95.60%   +0.38%     
==========================================
  Files          21       21              
  Lines        1738     1730       -8     
==========================================
- Hits         1655     1654       -1     
+ Misses         83       76       -7     

Impacted Files	Coverage Δ
pyproj/utils.py	81.48% <100.00%> (+8.90%)	⬆️

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