--- a/lib/python3.8/site-packages/pip/_internal/models/selection_prefs.py	Mon Jul 27 03:47:31 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,47 +0,0 @@
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Optional
-    from pip._internal.models.format_control import FormatControl
-
-
-class SelectionPreferences(object):
-
-    """
-    Encapsulates the candidate selection preferences for downloading
-    and installing files.
-    """
-
-    # Don't include an allow_yanked default value to make sure each call
-    # site considers whether yanked releases are allowed. This also causes
-    # that decision to be made explicit in the calling code, which helps
-    # people when reading the code.
-    def __init__(
-        self,
-        allow_yanked,  # type: bool
-        allow_all_prereleases=False,  # type: bool
-        format_control=None,          # type: Optional[FormatControl]
-        prefer_binary=False,          # type: bool
-        ignore_requires_python=None,  # type: Optional[bool]
-    ):
-        # type: (...) -> None
-        """Create a SelectionPreferences object.
-
-        :param allow_yanked: Whether files marked as yanked (in the sense
-            of PEP 592) are permitted to be candidates for install.
-        :param format_control: A FormatControl object or None. Used to control
-            the selection of source packages / binary packages when consulting
-            the index and links.
-        :param prefer_binary: Whether to prefer an old, but valid, binary
-            dist over a new source dist.
-        :param ignore_requires_python: Whether to ignore incompatible
-            "Requires-Python" values in links. Defaults to False.
-        """
-        if ignore_requires_python is None:
-            ignore_requires_python = False
-
-        self.allow_yanked = allow_yanked
-        self.allow_all_prereleases = allow_all_prereleases
-        self.format_control = format_control
-        self.prefer_binary = prefer_binary
-        self.ignore_requires_python = ignore_requires_python