remove unused deps

Author: icebob

package.json

@@ -51,7 +51,6 @@
     "babel-preset-stage-2": "6.22.0",
     "chai": "3.5.0",
     "conventional-changelog-cli": "1.2.0",
-    "conventional-github-releaser": "1.1.3",
     "coveralls": "2.11.16",
     "css-loader": "0.26.1",
     "eslint": "3.15.0",