Fix small problems with next.json

When creating the 2017.01 Guideline, I encountered two small issues
with the current next.json file:

1.) One capability has a typo in the name: networks-list-api-verions
    is missing an "s" in "versions".

2.) One capability that was removed still has tests listed, whereas
    other removed capabilities do not.

This patch corrects both issues to make the document more uniform.

Change-Id: I642cfae7e47d00f9c2778cdb39bd0aab925d10f3

next.json

@@ -5,7 +5,7 @@
   "source": "http://git.openstack.org/cgit/openstack/defcore/",
   "status": "draft",
   "cutoff_score": "74",
-  "target_approval": "2017-01-26",
+  "target_approval": "2017-01-24",
   "replaces": "2016.08",
   "releases": ["liberty", "mitaka", "newton", "ocata"],
   "platform": {
@@ -1044,31 +1044,6 @@
         }
       }
     },
-    "identity-v2-tokens-create": {
-      "achievements": [
-        "foundation",
-        "complete",
-        "doc",
-        "proximity",
-        "clients",
-        "discover",
-        "sticky",
-        "future",
-        "atomic",
-        "stable",
-        "tools",
-        "deployed"
-      ],
-      "admin": false,
-      "description": "Auth operations within the Identity API",
-      "project": "keystone",
-      "required-since": "",
-      "tests": {
-        "tempest.api.identity.v2.test_tokens.TokensTest.test_create_token": {
-          "idempotent_id": "id-65ae3b78-91ff-467b-a705-f6678863b8ec"
-        }
-      }
-    },
     "identity-v3-tokens-create": {
       "achievements": [
         "foundation",
@@ -2133,7 +2108,7 @@
         }
       }
     },
-    "networks-list-api-verions": {
+    "networks-list-api-versions": {
       "achievements": [
         "deployed",
         "clients",