test,ios: don't skip empty UDP packet tests

iOS 13.4 fixes the bug with empty UDP packets, so the tests can be run
again.

Author: jaimecbernardo

test/parallel/test-dgram-connect-send-empty-array.js

@@ -2,9 +2,6 @@
 
 const common = require('../common');
 
-if (common.isOSX || common.isIOS)
-  common.skip('because of 17894467 Apple bug');
-
 const assert = require('assert');
 const dgram = require('dgram');
 

test/parallel/test-dgram-connect-send-empty-buffer.js

@@ -1,9 +1,6 @@
 'use strict';
 const common = require('../common');
 
-if (common.isOSX || common.isIOS)
-  common.skip('because of 17894467 Apple bug');
-
 const assert = require('assert');
 const dgram = require('dgram');
 

test/parallel/test-dgram-connect-send-empty-packet.js

@@ -1,9 +1,6 @@
 'use strict';
 const common = require('../common');
 
-if (common.isOSX || common.isIOS)
-  common.skip('because of 17894467 Apple bug');
-
 const assert = require('assert');
 const dgram = require('dgram');
 

test/parallel/test-dgram-send-empty-array.js

@@ -2,9 +2,6 @@
 
 const common = require('../common');
 
-if (common.isOSX || common.isIOS)
-  common.skip('because of 17894467 Apple bug');
-
 const assert = require('assert');
 const dgram = require('dgram');
 

test/parallel/test-dgram-send-empty-buffer.js

@@ -22,9 +22,6 @@
 'use strict';
 const common = require('../common');
 
-if (common.isOSX || common.isIOS)
-  common.skip('because of 17894467 Apple bug');
-
 const assert = require('assert');
 const dgram = require('dgram');
 

test/parallel/test-dgram-send-empty-packet.js

@@ -1,9 +1,6 @@
 'use strict';
 const common = require('../common');
 
-if (common.isOSX || common.isIOS)
-  common.skip('because of 17894467 Apple bug');
-
 const assert = require('assert');
 const dgram = require('dgram');