Remove Python 3.6 support in setup.py

setup.py

@@ -27,7 +27,6 @@
 # Minimum supported versions of Numpy & Cython depend on the Python version
 NUMPY_MIN_VERSIONS = [
     # Numpy    Python
-    ('1.12',   "=='3.6'"),
     ('1.14.5', "=='3.7'"),
     ('1.17.5', "=='3.8'"),
     ('1.19.3', ">='3.9'"),
@@ -122,8 +121,6 @@ def run(self):
 Programming Language :: Cython
 Programming Language :: Python
 Programming Language :: Python :: 3
-Programming Language :: Python :: 3.6
-Programming Language :: Python :: 3.7
 Programming Language :: Python :: Implementation :: CPython
 Topic :: Scientific/Engineering
 Topic :: Database
@@ -179,6 +176,6 @@ def run(self):
   ext_modules = [Extension('h5py.x',['x.c'])],  # To trick build into running build_ext
   install_requires = RUN_REQUIRES,
   setup_requires = SETUP_REQUIRES,
-  python_requires='>=3.6',
+  python_requires='>=3.7',
   cmdclass = CMDCLASS,
 )