Remove feature detection of TRUST_ALL_CERTIFICATES

It requires `TlsSocket.getPeerCertificate()` function to work, which
is available since Node v0.11.4.

Author: lutovich

src/v1/internal/feature.js

@@ -26,7 +26,6 @@ import {EOL} from 'os';
 import NodeBuffer from './node-buf';
 import {ENCRYPTION_OFF, ENCRYPTION_ON, isEmptyObjectOrNull} from '../util';
 import {newError} from '../../error';
-import Feature from '../feature';
 
 let _CONNECTION_IDGEN = 0;
 
@@ -263,7 +262,7 @@ function connect( config, onSuccess, onFailure=(()=>null) ) {
 
 function isEncrypted(config) {
   const encryptionNotConfigured = config.encrypted == null || config.encrypted === undefined;
-  if (encryptionNotConfigured && Feature.trustAllCertificatesAvailable()) {
+  if (encryptionNotConfigured) {
     // default to using encryption if trust-all-certificates is available
     return true;
   }
@@ -274,8 +273,7 @@ function trustStrategyName(config) {
   if (config.trust) {
     return config.trust;
   }
-  // default to using TRUST_ALL_CERTIFICATES if it is available
-  return Feature.trustAllCertificatesAvailable() ? 'TRUST_ALL_CERTIFICATES' : 'TRUST_CUSTOM_CA_SIGNED_CERTIFICATES';
+  return 'TRUST_ALL_CERTIFICATES';
 }
 
 /**

src/v1/internal/node/node-channel.js

@@ -20,7 +20,6 @@
 import neo4j from '../../../src/v1';
 import fs from 'fs';
 import path from 'path';
-import Feature from '../../../src/v1/internal/feature';
 import sharedNeo4j from '../shared-neo4j';
 
 describe('trust-signed-certificates', () => {
@@ -90,12 +89,6 @@ describe('trust-all-certificates', () => {
   });
 
   it('should work with default certificate', done => {
-    // Assuming we only run this test on NodeJS with TAC support
-    if (!Feature.trustAllCertificatesAvailable()) {
-      done();
-      return;
-    }
-
     // Given
     driver = neo4j.driver("bolt://localhost", sharedNeo4j.authToken, {
       encrypted: "ENCRYPTION_ON",