Remove py.typed until #74 is addressed

[woodsp-ibm]

py.typed was removed in the stable branch since otherwise mypy testing in upstream application repos fails since as typing needs to be addressed - see #74

I would suggest to remove py.typed from main until such time as #74 is addressed to avoid it being included in any future release that might be made before #74 is done.

[woodsp-ibm]

The Update setup, readme urls ref. (as above) was a typo. The issue I meant to link (that I have now corrected it to be) was 124 not 114 (this one)