TYP: Disable NumPy's deprecated mypy plugin

* Mirror the upstream change to disable this
plugin. For details, see:
scipy/scipy#23123

* I don't think we're running `mypy` in CI anyway,
but might as well clean it up in case the team
turns it on at some point (a well-maintained type
stub library now exists upstream: https://github.com/numpy/numtype).

Author: tylerjereddy

darshan-util/pydarshan/mypy.ini

@@ -2,7 +2,6 @@
 warn_redundant_casts = True
 warn_unused_ignores = True
 show_error_codes = True
-plugins = numpy.typing.mypy_plugin
 exclude = darshan/examples/tutorial/
 
 # Third party dependencies that don't have types.