delete unused requirements parsing code in dist_utils.py

Please people. Do not do things on import! Plus, all the magic around parsing
requirements was entirely unnecessary for this repo as there are NO reqs.

Author: cognifloyd

dist_utils.py

@@ -21,66 +21,13 @@
 
 from distutils.version import StrictVersion
 
-GET_PIP = 'curl https://bootstrap.pypa.io/get-pip.py | python'
-
-try:
-    import pip
-    from pip import __version__ as pip_version
-except ImportError as e:
-    print('Failed to import pip: %s' % (str(e)))
-    print('')
-    print('Download pip:\n%s' % (GET_PIP))
-    sys.exit(1)
-
-try:
-    # pip < 10.0
-    from pip.req import parse_requirements
-except ImportError:
-    # pip >= 10.0
-
-    try:
-        from pip._internal.req.req_file import parse_requirements
-    except ImportError as e:
-        print('Failed to import parse_requirements from pip: %s' % (str(e)))
-        print('Using pip: %s' % (str(pip_version)))
-        sys.exit(1)
-
 __all__ = [
-    'check_pip_version',
-    'fetch_requirements',
     'apply_vagrant_workaround',
     'get_version_string',
     'parse_version_string'
 ]
 
 
-def check_pip_version(min_version='6.0.0'):
-    """
-    Ensure that a minimum supported version of pip is installed.
-    """
-    if StrictVersion(pip.__version__) < StrictVersion(min_version):
-        print("Upgrade pip, your version '{0}' "
-              "is outdated. Minimum required version is '{1}':\n{2}".format(pip.__version__,
-                                                                            min_version,
-                                                                            GET_PIP))
-        sys.exit(1)
-
-
-def fetch_requirements(requirements_file_path):
-    """
-    Return a list of requirements and links by parsing the provided requirements file.
-    """
-    links = []
-    reqs = []
-    for req in parse_requirements(requirements_file_path, session=False):
-        # Note: req.url was used before 9.0.0 and req.link is used in all the recent versions
-        link = getattr(req, 'link', getattr(req, 'url', None))
-        if link:
-            links.append(str(link))
-        reqs.append(str(req.req))
-    return (reqs, links)
-
-
 def apply_vagrant_workaround():
     """
     Function which detects if the script is being executed inside vagrant and if it is, it deletes

setup.py

@@ -17,15 +17,13 @@
 
 from setuptools import setup, find_packages
 
-from dist_utils import fetch_requirements
 from dist_utils import parse_version_string
 
 BASE_DIR = os.path.dirname(os.path.abspath(__file__))
 REQUIREMENTS_FILE = os.path.join(BASE_DIR, "requirements.txt")
 INIT_FILE = os.path.join(BASE_DIR, "st2rbac_backend", "__init__.py")
 
 version = parse_version_string(INIT_FILE)
-install_reqs, dep_links = fetch_requirements(REQUIREMENTS_FILE)
 
 setup(
     name="st2-rbac-backend",
@@ -50,8 +48,8 @@
     provides=["st2rbac_backend"],
     packages=find_packages(),
     include_package_data=True,
-    install_requires=install_reqs,
-    dependency_links=dep_links,
+    install_requires=[],
+    dependency_links=[],
     test_suite="tests",
     entry_points={
         "st2common.rbac.backend": [