Remove obsolete version entries from versions.json

Removed deprecated version entries for 2.0.0-M1, v1.1.0, and v0.18.1.

Author: tzolov

versions.json

@@ -6,13 +6,6 @@
       "latest-snapshot"
     ]
   },
-  {
-    "version": "2.0.0-M1",
-    "title": "2.0.0-M1",
-    "aliases": [
-      "latest"
-    ]
-  },
   {
     "version": "1.1.0-SNAPSHOT",
     "title": "1.1.0-SNAPSHOT",
@@ -23,19 +16,9 @@
     "title": "v1.1.1",
     "aliases": []
   },
-  {
-    "version": "v1.1.0",
-    "title": "v1.1.0",
-    "aliases": []
-  },
   {
     "version": "v1.0.1",
     "title": "v1.0.1",
     "aliases": []
-  },
-  {
-    "version": "v0.18.1",
-    "title": "v0.18.1",
-    "aliases": []
   }
 ]