Remove fix for odd MSVCRT version on Windows 3.7
Remove fix for odd MSVCRT version on Windows 3.7

The comment in the original code came about because of the bug fixed in
gh-20155.  The fixed subsequent clause should now give the correct
assembly version for the given Python.

In fact, the original clause matches the MSVC for Python 3.7.1:

```
PS C:\> .\Python37\python.exe .\io\check_versions.py
sys.version 3.7.1 (v3.7.1:260ec2c36a, Oct 20 2018, 14:57:15) [MSC v.1915 64 bit (AMD64)]
distutils build version 14.1
msvcrt.CRT_ASSEMBLY_VERSION 14.15.26726.0
```

mhvk/numpy,jakirkham/numpy,mhvk/numpy,jakirkham/numpy,charris/numpy,rgommers/numpy,mattip/numpy,jakirkham/numpy,seberg/numpy,jakirkham/numpy,charris/numpy,seberg/numpy,charris/numpy,charris/numpy,anntzer/numpy,anntzer/numpy,mhvk/numpy,mattip/numpy,pdebuyl/numpy,mattip/numpy,endolith/numpy,rgommers/numpy,pdebuyl/numpy,jakirkham/numpy,rgommers/numpy,numpy/numpy,numpy/numpy,numpy/numpy,numpy/numpy,rgommers/numpy,endolith/numpy,anntzer/numpy,mattip/numpy,endolith/numpy,mhvk/numpy,pdebuyl/numpy,endolith/numpy,seberg/numpy,anntzer/numpy,pdebuyl/numpy,seberg/numpy,mhvk/numpy