Cleaned up fixtures from latest collections entry

refs https://github.com/TryGhost/Arch/issues/95
refs 45c1a82909

- Latest collection has become "dynamic" in the referenced commit, this means we don't need stored entries in the database.

ghost/core/core/server/data/schema/fixtures/fixtures.json

@@ -975,20 +975,6 @@
                 "coming-soon": ["News"]
             }
         },
-        {
-            "from": {
-                "model": "Collection",
-                "match": "slug",
-                "relation": "posts"
-            },
-            "to": {
-                "model": "Post",
-                "match": "slug"
-            },
-            "entries": {
-                "latest": ["coming-soon"]
-            }
-        },
         {
             "from": {
                 "model": "User",

ghost/core/test/unit/server/data/schema/integrity.test.js

@@ -36,7 +36,7 @@ const validateRouteSettings = require('../../../../../core/server/services/route
 describe('DB version integrity', function () {
     // Only these variables should need updating
     const currentSchemaHash = '38fa7cfe8d74659ec75a5963b13cb4eb';
-    const currentFixturesHash = '6e8d5e89044320656de4900dd0529e68';
+    const currentFixturesHash = '4db87173699ad9c9d8a67ccab96dfd2d';
     const currentSettingsHash = '3a7ca0aa6a06cba47e3e898aef7029c2';
     const currentRoutesHash = '3d180d52c663d173a6be791ef411ed01';