FSA: Migrate remove WPTs from file-system-access to fs

Spec PR: whatwg/fs#9

Bug: 1114923
Change-Id: Ie52068e0053cf3a1b693e09c5623eb4b42dd6eb9

Author: a-sully

file-system-access/local_FileSystemBaseHandle-remove-manual.https.html

@@ -7,4 +7,4 @@
 <script src="/resources/testdriver-vendor.js"></script>
 <script src="resources/test-helpers.js"></script>
 <script src="resources/local-fs-test-helpers.js"></script>
-<script src="script-tests/FileSystemBaseHandle-remove.js"></script>
+<script src="../fs/script-tests/FileSystemBaseHandle-remove.js"></script>

file-system-access/sandboxed_FileSystemBaseHandle-remove.https.any.js renamed to fs/FileSystemBaseHandle-remove.https.any.js

@@ -1,3 +1,3 @@
 // META: script=resources/test-helpers.js
-// META: script=../fs/resources/sandboxed-fs-test-helpers.js
+// META: script=resources/sandboxed-fs-test-helpers.js
 // META: script=script-tests/FileSystemBaseHandle-remove.js