Cleanup preserved lib locking in portage.

pym/_emerge/actions.py

 # Copyright 1999-2011 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 from __future__ import print_function
 
 try:
         from subprocess import getstatusoutput as subprocess_getstatusoutput
 except ImportError:
         from commands import getstatusoutput as subprocess_getstatusoutput
 import errno
@@ skipping 430 matching lines @@
                 if retval == os.EX_OK and not (buildpkgonly or fetchonly or pretend):
                         if "yes" == settings.get("AUTOCLEAN"):
                                 portage.writemsg_stdout(">>> Auto-cleaning packages...\n")
                                 unmerge(trees[settings["ROOT"]]["root_config"],
                                         myopts, "clean", [],
                                         ldpath_mtimes, autoclean=1)
                         else:
                                 portage.writemsg_stdout(colorize("WARN", "WARNING:")
                                         + " AUTOCLEAN is disabled.  This can cause serious"
                                         + " problems due to overlapping packages.\n")
-                        plib_registry = \
-                                trees[settings["ROOT"]]["vartree"].dbapi._plib_registry
-                        if plib_registry is None:
-                                # preserve-libs is entirely disabled
-                                pass
-                        else:
-                                plib_registry.pruneNonExisting()
 
                 return retval
 
 def action_config(settings, trees, myopts, myfiles):
         enter_invalid = '--ask-enter-invalid' in myopts
         if len(myfiles) != 1:
                 print(red("!!! config can only take a single package atom at this time\n"))
                 sys.exit(1)
         if not is_valid_package_atom(myfiles[0]):
                 portage.writemsg("!!! '%s' is not a valid package atom.\n" % myfiles[0],
@@ skipping 2673 matching lines @@
         @type repo_id:
         @rtype: Integer
         @returns:
         1.  The number of unread but relevant news items.
 
         """
         from portage.news import NewsManager
         manager = NewsManager(portdb, vardb, NEWS_PATH, UNREAD_PATH)
         return manager.getUnreadItems( repo_id, update=update )