remove some unused deps

package.json

@@ -22,17 +22,12 @@
     "chalk": "^2.3.0",
     "cheerio": "^1.0.0-rc.2",
     "chokidar": "^1.7.0",
-    "code-frame": "^5.0.0",
-    "escape-html": "^1.0.3",
     "glob": "^7.1.2",
-    "locate-character": "^2.0.5",
     "mkdirp": "^0.5.1",
-    "mri": "^1.1.0",
     "node-fetch": "^1.7.3",
     "polka": "^0.3.4",
     "port-authority": "^1.0.0",
     "pretty-ms": "^3.1.0",
-    "relative": "^3.0.2",
     "require-relative": "^0.8.7",
     "rimraf": "^2.6.2",
     "sade": "^1.4.0",
@@ -50,7 +45,6 @@
     "@types/mkdirp": "^0.5.2",
     "@types/rimraf": "^2.0.2",
     "compression": "^1.7.1",
-    "electron": "^1.8.2",
     "eslint": "^4.13.1",
     "eslint-plugin-import": "^2.8.0",
     "get-port": "^3.2.0",