Remove Shared Worker WPT for WebUSB

This change removes the WebUSB on Shared Worker web platform tests,
since the feature is not yet implemented in any browser.

Bug: 841510
Change-Id: I6cd09c245edcd69799b39701b82ba1510caf845e
Reviewed-on: https://chromium-review.googlesource.com/1151752Reviewed-by: Chong Zhang <chongz@chromium.org>
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Commit-Queue: Ovidio Henriquez <odejesush@chromium.org>
Cr-Commit-Position: refs/heads/master@{#578479}

third_party/WebKit/LayoutTests/external/wpt/webusb/idlharness.https.any.js

@@ -2,7 +2,6 @@
 // META: script=/resources/idlharness.js
 // META: script=/webusb/resources/fake-devices.js
 // META: script=/webusb/resources/usb-helpers.js
-// META: global=sharedworker
 'use strict';
 
 // Object instances used by the IDL test.

third_party/WebKit/LayoutTests/external/wpt/webusb/insecure-context.any.js

-// META: global=sharedworker
 'use strict';
 
 test(() => {

third_party/WebKit/LayoutTests/external/wpt/webusb/usb.https.any.js

 // META: script=/webusb/resources/fake-devices.js
 // META: script=/webusb/resources/usb-helpers.js
-// META: global=sharedworker
 'use strict';
 
 let usbDevice, devicesFirstTime, fakeDevice, removedDevice;
@@ -47,4 +46,4 @@ usb_test(() => getFakeDevice()
         error => assert_equals(error.code, DOMException.NOT_FOUND_ERR)),
     'ondisconnect event is triggered by removing a device');
 
-done();
+done();
\ No newline at end of file

third_party/WebKit/LayoutTests/external/wpt/webusb/usbConnectionEvent.https.any.js

 // META: script=/webusb/resources/fake-devices.js
 // META: script=/webusb/resources/usb-helpers.js
-// META: global=sharedworker
 
 'use strict';
 

third_party/WebKit/LayoutTests/external/wpt/webusb/usbDevice.https.any.js

 // META: script=/webusb/resources/fake-devices.js
 // META: script=/webusb/resources/usb-helpers.js
-// META: global=sharedworker
 'use strict';
 
 function assertRejectsWithNotFoundError(promise) {

third_party/WebKit/LayoutTests/external/wpt/webusb/usbInTransferResult.https.any.js

 // META: script=/webusb/resources/fake-devices.js
 // META: script=/webusb/resources/usb-helpers.js
-// META: global=sharedworker
 'use strict';
 
 test(t => {

third_party/WebKit/LayoutTests/external/wpt/webusb/usbIsochronousInTransferPacket.https.any.js

-// META: global=sharedworker
 'use strict';
 
 test(t => {

third_party/WebKit/LayoutTests/external/wpt/webusb/usbIsochronousInTransferResult.https.any.js

-// META: global=sharedworker
 'use strict';
 
 test(t => {

third_party/WebKit/LayoutTests/external/wpt/webusb/usbIsochronousOutTransferPacket.https.any.js

-// META: global=sharedworker
 'use strict';
 
 test(t => {

third_party/WebKit/LayoutTests/external/wpt/webusb/usbIsochronousOutTransferResult.https.any.js

-// META: global=sharedworker
 'use strict';
 
 test(t => {

third_party/WebKit/LayoutTests/external/wpt/webusb/usbOutTransferResult.https.any.js

-// META: global=sharedworker
 'use strict';
 
 test(t => {