CLN: Remove unused and undocumented kind keyword from read_excel

Pops kwarg and warns if you pass it (rather than passing on)
BUG: Fix DataFrame.from_records w/ normal ndarray.

Previously, was causing a TypeError about None not being iterable when
arr.dtype.names was None. Now goes to 'last ditch' parsing instead.
Merge pull request #4713 from jtratner/remove-kind-parameter-read-excel

CLN: Remove unused and undocumented kind keyword from read_excel
Merge pull request #4727 from jtratner/fix-from-records-unstructured-ndarray

BUG: Fix DataFrame.from_records w/ normal ndarray.
BUG: (GH4726) bug in getting a cross-sectional using iloc/loc with a duplicate items index