Revert "Add ability to pause and resume any node"

This reverts commit 07aad11081.

When the semantics are clear, functionality like this will get added back to
Mininet.

Conflicts:

	mininet/node.py

mininet/cli.py

@@ -161,26 +161,6 @@ class CLI( Cmd ):
         else:
             self.mn.configLinkStatus( *args )
 
-    def do_pause( self, args ):
-        "Temporarily bring a node down."
-        args = args.split()
-        if len(args) != 1:
-            error( 'invalid number of args: pause [node]\n' )
-        elif args[0] not in self.nodemap:
-            error( 'invalid node: %s\n' % args[0] )
-        else:
-            self.nodemap[ args[ 0 ] ].pause()
-
-    def do_resume( self, args ):
-        "Temporarily bring a node up."
-        args = args.split()
-        if len(args) != 1:
-            error( 'invalid number of args: resume [node]\n' )
-        elif args[0] not in self.nodemap:
-            error( 'invalid node: %s\n' % args[0] )
-        else:
-            self.nodemap[ args[ 0 ] ].resume()
-
     def do_exit( self, args ):
         "Exit"
         return 'exited by user command'