Remove fake Bluetooth adapter from canonicalizeFilter tests

third_party/WebKit/LayoutTests/bluetooth/requestDevice/canonicalizeFilter/empty-namePrefix.html

Index: third_party/WebKit/LayoutTests/bluetooth/requestDevice/canonicalizeFilter/empty-namePrefix.html
diff --git a/third_party/WebKit/LayoutTests/bluetooth/requestDevice/canonicalizeFilter/empty-namePrefix.html b/third_party/WebKit/LayoutTests/bluetooth/requestDevice/canonicalizeFilter/empty-namePrefix.html
index d7633f6785b6f615d9ce96c1c57ce70ef49fe639..2e5d5d5f82ea3daad60168562085905ac52267f3 100644
--- a/third_party/WebKit/LayoutTests/bluetooth/requestDevice/canonicalizeFilter/empty-namePrefix.html
+++ b/third_party/WebKit/LayoutTests/bluetooth/requestDevice/canonicalizeFilter/empty-namePrefix.html
@@ -27,15 +27,12 @@ let test_specs = [{
 }];
 
 promise_test(t => {
-  return setBluetoothFakeAdapter('EmptyAdapter')
-    .then(() => {
-      let test_promises = Promise.resolve();
-      test_specs.forEach(args => {
+    let test_promises = Promise.resolve();
+    test_specs.forEach(args => {
         test_promises = test_promises
             .then(() => promise_rejects(
-              t, new TypeError(), requestDeviceWithKeyDown(args)));
-      });
-      return test_promises;
+                t, new TypeError(), requestDeviceWithKeyDown(args)));
     });
+    return test_promises;
 }, 'requestDevice with empty namePrefix. Should reject with TypeError.');
 </script>