diff -rU3 pip-20.3-orig/src/pip/_vendor/packaging/version.py pip-20.3/src/pip/_vendor/packaging/version.py
--- pip-20.3-orig/src/pip/_vendor/packaging/version.py	2020-11-30 12:58:32.000000000 +0100
+++ pip-20.3/src/pip/_vendor/packaging/version.py	2020-12-16 21:25:15.818221608 +0100
@@ -124,11 +124,6 @@
         self._version = str(version)
         self._key = _legacy_cmpkey(self._version)
 
-        warnings.warn(
-            "Creating a LegacyVersion has been deprecated and will be "
-            "removed in the next major release",
-            DeprecationWarning,
-        )
 
     def __str__(self):
         # type: () -> str