ioc_upgrade.py: remove call to pkg-static

iocage_lib/ioc_upgrade.py

@@ -190,24 +190,6 @@ def upgrade_jail(self):
                 self.new_release
             )
 
-            if f_rel.startswith('12'):
-                #  https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239498
-                cp = su.Popen(
-                    ['pkg-static', '-j', self.jid, 'install', '-q', '-f', '-y', 'pkg'],
-                    stdout=su.PIPE, stderr=su.PIPE, env=self.upgrade_env
-                )
-                _, stderr = cp.communicate()
-                if cp.returncode:
-                    # Let's make this non-fatal as this is only being done as a convenience to user
-                    iocage_lib.ioc_common.logit(
-                        {
-                            'level': 'ERROR',
-                            'message': 'Unable to install pkg after upgrade'
-                        },
-                        _callback=self.callback,
-                        silent=self.silent,
-                    )
-
         finally:
             if tmp:
                 if not tmp.closed: