remove kcheck, unused devDeps (#3693)

remove unused packages (devDeps)

package.json

@@ -8,6 +8,7 @@
   "devDependencies": {
     "async": "^1.5.0",
     "babel-core": "^6.13.2",
+    "babel-eslint": "^6.1.2",
     "babel-plugin-transform-class-properties": "^6.6.0",
     "babel-plugin-transform-flow-strip-types": "^6.3.13",
     "babel-plugin-transform-runtime": "^6.3.13",
@@ -20,8 +21,11 @@
     "chalk": "1.1.1",
     "codecov.io": "^0.1.6",
     "derequire": "^2.0.2",
-    "es5-shim": "^4.1.7",
-    "fs-readdir-recursive": "^0.1.2",
+    "eslint": "^2.13.1",
+    "eslint-config-babel": "^1.0.1",
+    "eslint-plugin-babel": "^3.3.0",
+    "eslint-plugin-flow-vars": "^0.5.0",
+    "flow-bin": "^0.31.1",
     "gulp": "^3.9.0",
     "gulp-babel": "^6.0.0",
     "gulp-newer": "^1.0.0",
@@ -29,18 +33,11 @@
     "gulp-util": "^3.0.7",
     "gulp-watch": "^4.3.5",
     "istanbul": "^0.4.5",
-    "kcheck": "^2.0.0",
     "lerna": "2.0.0-beta.23",
     "lerna-changelog": "^0.2.0",
     "lodash": "^4.2.0",
-    "matcha": "^0.6.0",
-    "mkdirp": "^0.5.1",
     "mocha": "^3.0.0",
     "output-file-sync": "^1.1.1",
-    "pad": "^1.0.0",
-    "path-exists": "^1.0.0",
-    "progress": "^1.1.8",
-    "readline-sync": "^1.2.19",
     "rimraf": "^2.4.3",
     "semver": "^5.0.0",
     "shelljs": "^0.7.4",