Remove enum-compat (#25)

Co-authored-by: Russ Garrett <russ@garrett.co.uk>

Author: fabaff

setup.py

@@ -30,7 +30,6 @@
     python_requires=">=3.4",
     packages=["emv", "emv.protocol", "emv.command"],
     install_requires=[
-        "enum-compat==0.0.3",
         "pyscard==2.0.0",
         "pycountry==20.7.3",
         "terminaltables==3.1.0",