Remove no-op calls to WheelCache.cleanup

src/pip/_internal/commands/freeze.py

@@ -96,8 +96,5 @@ class FreezeCommand(Command):
             exclude_editable=options.exclude_editable,
         )
 
-        try:
-            for line in freeze(**freeze_kwargs):
-                sys.stdout.write(line + '\n')
-        finally:
-            wheel_cache.cleanup()
+        for line in freeze(**freeze_kwargs):
+            sys.stdout.write(line + '\n')

src/pip/_internal/commands/install.py

@@ -447,7 +447,6 @@ class InstallCommand(RequirementCommand):
                 # Clean up
                 if not options.no_clean:
                     requirement_set.cleanup_files()
-                    wheel_cache.cleanup()
 
         if options.target_dir:
             self._handle_target_dir(

src/pip/_internal/commands/wheel.py

@@ -194,4 +194,3 @@ class WheelCommand(RequirementCommand):
             finally:
                 if not options.no_clean:
                     requirement_set.cleanup_files()
-                    wheel_cache.cleanup()