Remove latest tag

Author: palemieux

package.json

@@ -2,9 +2,6 @@
     "name": "imsc",
     "description": "Renders IMSC documents to HTML5 fragments",
     "version": "1.1.2-rc.1",
-    "publishConfig": {
-        "tag": "latest"
-    },
     "license": "BSD-2-Clause",
     "homepage": "https://github.com/sandflow/imscJS",
     "bugs": "https://github.com/sandflow/imscJS/issues",