Remove ledger methods from Connection (#1543)

* remove ledger subscription from connection

* remove more client ledger stuff

* resolve TS concerns

* fix all tests except broadcast tests

* fix broadcast tests

* clean up more ledger stuff in testing

* respond to comments

test/ripple-client-test-private.ts

@@ -2,10 +2,8 @@ import assert from 'assert-diff'
 import _ from 'lodash'
 import {Client} from 'xrpl-local'
 import {RecursiveData} from 'xrpl-local/ledger/utils'
-import {assertRejects, assertResultMatch} from './utils'
+import {assertRejects} from './utils'
 import addresses from './fixtures/addresses.json'
-import responses from './fixtures/responses'
-import ledgerClosed from './fixtures/rippled/ledger-close-newer.json'
 import setupClient from './setup-client'
 
 const {validate, schemaValidator, ledgerUtils} = Client._PRIVATE
@@ -44,14 +42,6 @@ describe('Client', function () {
     //       to test that connect() times out after 2 seconds.
   })
 
-  it('ledger closed event', function (done) {
-    this.client.on('ledger', (message) => {
-      assertResultMatch(message, responses.ledgerEvent, 'ledgerEvent')
-      done()
-    })
-    this.client.connection._ws.emit('message', JSON.stringify(ledgerClosed))
-  })
-
   describe('[private] schema-validator', function () {
     it('valid', function () {
       assert.doesNotThrow(function () {