Remove redundant lib declarations (#663)

es2015 includes es5 and es2015.promise

https://github.com/Microsoft/TypeScript/blob/master/lib/lib.es2015.d.ts

Author: mmermerkaya

config/tsconfig.base.json

@@ -4,9 +4,7 @@
     "declaration": true,
     "importHelpers": true,
     "lib": [
-      "es5",
       "es2015",
-      "es2015.promise",
       "dom"
     ],
     "module": "commonjs",