Fix web3#1658 by removing the typings files and all references to typescript specific things in the codebase.

Author: levino

packages/web3/index.d.ts

@@ -6,7 +6,6 @@
   "repository": "https://github.com/ethereum/web3.js/tree/master/packages/web3",
   "license": "LGPL-3.0",
   "main": "src/index.js",
-  "types": "index.d.ts",
   "bugs": {
     "url": "https://github.com/ethereum/web3.js/issues"
   },
@@ -43,8 +42,6 @@
     }
   ],
   "dependencies": {
-    "@types/underscore": "^1.8.0",
-    "@types/bignumber.js": "^4.0.2",
     "web3-bzz": "1.0.0-beta.35",
     "web3-core": "1.0.0-beta.35",
     "web3-eth": "1.0.0-beta.35",