Remove broken is-url dependency

package.json

@@ -7,7 +7,6 @@
   "author": "",
   "license": "UNLICENSED",
   "devDependencies": {
-    "@types/is-url": "^1.2.30",
     "@types/jest": "^27.4.1",
     "@types/lodash": "^4.14.181",
     "@types/semver": "^7.3.9",
@@ -38,7 +37,6 @@
     "ethers": "^5.6.2",
     "evmosjs": "^0.2.5",
     "graphql.js": "^0.6.8",
-    "is-url": "^1.2.4",
     "js-sha256": "^0.9.0",
     "js-yaml": "^3.14.1",
     "jsonschema": "^1.4.0",

src/index.ts

@@ -1,4 +1,3 @@
-import isUrl from 'is-url';
 import { sha256 } from 'js-sha256';
 import { generatePostBodyBroadcast, BroadcastMode } from '@tharsis/provider';
 import {
@@ -122,13 +121,6 @@ export class Registry {
   }
 
   constructor(gqlUrl: string, restUrl: string = "", chainId: string = DEFAULT_CHAIN_ID) {
-    if (!isUrl(gqlUrl)) {
-      throw new Error('Path to a GQL endpoint should be provided.');
-    }
-
-    if (restUrl && !isUrl(restUrl)) {
-      throw new Error('REST endpoint is not a URL string.');
-    }
 
     this._endpoints = {
       rest: restUrl,