setup: Drop obsolete zip_safe flag

More info in the documentation:
https://setuptools.pypa.io/en/latest/deprecated/zip_safe.html

And fix style by the way.

setup.cfg

@@ -7,7 +7,7 @@ description = A tool for checking the security hardening options of the Linux ke
 long_description = file: README.md
 license = GNU General Public License v3 (GPLv3)
 license_file = LICENSE.txt
-classifiers = 
+classifiers =
 	Development Status :: 5 - Production/Stable
 	License :: OSI Approved :: GNU General Public License v3 (GPLv3)
 	Topic :: Security
@@ -16,12 +16,11 @@ classifiers =
 	Programming Language :: Python :: 3
 
 [options]
-zip_safe = true
 include_package_data = true
 packages = kconfig_hardened_check
 setup_requires = setuptools
 
 [options.entry_points]
-console_scripts = 
+console_scripts =
 	kconfig-hardened-check = kconfig_hardened_check:main