Remove unused get_platform function

Now handled internally in `packaging.tags` (in `_platform_tags`).

Author: chrahunt

src/pip/_internal/pep425tags.py

@@ -1,9 +1,7 @@
 """Generate and work with PEP 425 Compatibility Tags."""
 from __future__ import absolute_import
 
-import distutils.util
 import logging
-import platform
 import re
 import sys
 
@@ -49,38 +47,6 @@ def get_impl_version_info():
         return sys.version_info[0], sys.version_info[1]
 
 
-def _is_running_32bit():
-    # type: () -> bool
-    return sys.maxsize == 2147483647
-
-
-def get_platform():
-    # type: () -> str
-    """Return our platform name 'win32', 'linux_x86_64'"""
-    if sys.platform == 'darwin':
-        # distutils.util.get_platform() returns the release based on the value
-        # of MACOSX_DEPLOYMENT_TARGET on which Python was built, which may
-        # be significantly older than the user's current machine.
-        release, _, machine = platform.mac_ver()
-        split_ver = release.split('.')
-
-        if machine == "x86_64" and _is_running_32bit():
-            machine = "i386"
-        elif machine == "ppc64" and _is_running_32bit():
-            machine = "ppc"
-
-        return 'macosx_{}_{}_{}'.format(split_ver[0], split_ver[1], machine)
-
-    # XXX remove distutils dependency
-    result = distutils.util.get_platform().replace('.', '_').replace('-', '_')
-    if result == "linux_x86_64" and _is_running_32bit():
-        # 32 bit Python program (running on a 64 bit Linux): pip should only
-        # install and run 32 bit compiled extensions in that case.
-        result = "linux_i686"
-
-    return result
-
-
 def get_all_minor_versions_as_strings(version_info):
     # type: (Tuple[int, ...]) -> List[str]
     versions = []