Remove option --force in capsule delete

It looks this option is not in server. This patch removes it from
client.

Change-Id: Id46df7c79cc560243c2965d1a8aa5e7e41e581b7

zunclient/v1/capsules.py

@@ -101,9 +101,8 @@ class CapsuleManager(base.Manager):
                                          "capsules",
                                          limit=limit)
 
-    def delete(self, id, force):
-        return self._delete(self._path(id),
-                            qparams={'force': force})
+    def delete(self, id):
+        return self._delete(self._path(id))
 
     def describe(self, id):
         try:

zunclient/v1/capsules_shell.py

@@ -75,14 +75,11 @@ def do_capsule_list(cs, args):
            metavar='<capsule>',
            nargs='+',
            help='ID or name of the (capsule)s to delete.')
-@utils.arg('-f', '--force',
-           action='store_true',
-           help='Force delete the capsule.')
 def do_capsule_delete(cs, args):
     """Delete specified capsules."""
     for capsule in args.capsules:
         try:
-            cs.capsules.delete(capsule, args.force)
+            cs.capsules.delete(capsule)
             print("Request to delete capsule %s has been accepted." %
                   capsule)
         except Exception as e: