Drop node v10 support (#1471)

index.js

@@ -19,8 +19,6 @@
 
 'use strict'
 
-const nodeMajor = Number(process.versions.node.split('.')[0])
-
 const { EventEmitter } = require('events')
 const { URL } = require('url')
 const debug = require('debug')('elasticsearch')
@@ -47,15 +45,6 @@ const kEventEmitter = Symbol('elasticsearchjs-event-emitter')
 
 const ESAPI = require('./api')
 
-/* istanbul ignore next */
-if (nodeMajor >= 10 && nodeMajor < 12) {
-  process.emitWarning('You are using a version of Node.js that will reach EOL in April 2021. ' +
-                      'The support for this version will be dropped in 7.13. ' +
-                      'Please refer to https://ela.st/nodejs-support for additional information.',
-  'DeprecationWarning'
-  )
-}
-
 class Client extends ESAPI {
   constructor (opts = {}) {
     super({ ConfigurationError })