Fix setup.py python version, deps in test_requirements

Author: yaroslavNqualisystems

setup.py

@@ -33,9 +33,7 @@
     packages=find_packages(),
     install_requires=required,
     tests_require=required_for_tests,
-    python_requires=(
-        ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*, !=3.6.*, <4"
-    ),
+    python_requires="~=3.7",
     version=version_from_file,
     package_data={"": ["*.txt"]},
     description="Quali checkpoint specific package",

test_requirements.txt

@@ -1,3 +1,2 @@
-mock; python_version <= '2.7'
 pytest
 pytest-cov