s/remove_/delete_/ for consistency

Change-Id: I9f6f97e007a702859913f39c51f01a32b56c5bf7
diff --git a/admin.py b/admin.py
index 2c74577..446e3d3 100644
--- a/admin.py
+++ b/admin.py
@@ -83,8 +83,8 @@
                   help = "Add a new switch to the system",
                   nargs = 1,
                   metavar = "<name>")
-switch_group.add_option("--remove_switch",
-                  dest = "remove_switch",
+switch_group.add_option("--delete_switch",
+                  dest = "delete_switch",
                   action = "store",
                   type = "int",
                   help = "Remove an existing switch from the system",
@@ -130,8 +130,8 @@
                   help = "Add a new port to the system",
                   nargs = 2,
                   metavar = "<switch_id> <name>")
-port_group.add_option("--remove_port",
-                  dest = "remove_port",
+port_group.add_option("--delete_port",
+                  dest = "delete_port",
                   action = "store",
                   type = "int",
                   help = "Remove an existing port from the system",
@@ -218,8 +218,8 @@
                   help = "Add a new vlan to the system",
                   nargs = 3,
                   metavar = "<name> <tag> <is_base_vlan>")
-vlan_group.add_option("--remove_vlan",
-                  dest = "remove_vlan",
+vlan_group.add_option("--delete_vlan",
+                  dest = "delete_vlan",
                   action = "store",
                   type = "int",
                   help = "Remove an existing vlan from the system",
@@ -284,15 +284,15 @@
         print 'Created vlan_id %d' % vlan_id
     except InputError as inst:
         print 'Failed: %s' % inst
-elif opts.remove_switch is not None:
+elif opts.delete_switch is not None:
     try:
-        switch_id = db.delete_switch(opts.remove_switch)
+        switch_id = db.delete_switch(opts.delete_switch)
         print 'Deleted switch_id %d' % switch_id
     except InputError as inst:
         print 'Failed: %s' % inst
-elif opts.remove_port is not None:
+elif opts.delete_port is not None:
     try:
-        port_id = db.delete_port(opts.remove_port)
+        port_id = db.delete_port(opts.delete_port)
         print 'Deleted port_id %d' % port_id
     except InputError as inst:
         print 'Failed: %s' % inst