pySim-shell: Unregister TS 102 222 commands during 'equip'

This avoids error messages about re-registering the same TS 102 222
commands during executing the 'equip' command.

Change-Id: I3567247fe84e928e3ef404c07eff8250ef04dfe9
diff --git a/pySim-shell.py b/pySim-shell.py
index fc825ef..d6d9a64 100755
--- a/pySim-shell.py
+++ b/pySim-shell.py
@@ -204,7 +204,7 @@
         if self.rs:
             lchan = self.rs.lchan[0]
             lchan.unregister_cmds(self)
-        for cmds in [Iso7816Commands, PySimCommands]:
+        for cmds in [Iso7816Commands, Ts102222Commands, PySimCommands]:
             cmd_set = self.find_commandsets(cmds)
             if cmd_set:
                 self.unregister_command_set(cmd_set[0])