Revert change. pisi can not decide which operation to return.

ChangeLog

@@ -1,7 +1,3 @@
-2009-12-31 Serdar Dalgıç <serdar@pardus.org.tr>
-		* pisi/cli/history.py: Do not give permission to takeback system to
-		the initial state which is always `pardus-cd repository is updated.` .
-
 2009-12-21 Gökçen Eraslan <gokcen@pardus.org.tr>
 		* pisi/actionsapi/cmaketools.py: Change CMake build type to
 		RelWithDebInfo to get faster KDE packages.

pisi/cli/history.py

@@ -123,10 +123,7 @@ Lists previous operations.""")
         elif ctx.get_option('takeback'):
             opno = ctx.get_option('takeback')
             if opno != -1:
-                if opno == 1:
-                    ctx.ui.error(_("You can not takeback your system to the initial state."))
-                else:
-                    self.takeback(opno)
+                self.takeback(opno)
                 return
 
         self.redirect_output(self.print_history)