[test] Remove deprecated ignition-test-suite alias

test/ignition.isolate

Index: test/ignition.isolate
diff --git a/test/ignition.isolate b/test/ignition.isolate
deleted file mode 100644
index 12b0bb65918b337d5a71fb9a6195f2f01f27360b..0000000000000000000000000000000000000000
--- a/test/ignition.isolate
+++ /dev/null
@@ -1,21 +0,0 @@
-# Copyright 2016 the V8 project authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-{
-  'variables': {
-    'command': [
-      '../tools/run-tests.py',
-    ],
-  },
-  'includes': [
-    'cctest/cctest.isolate',
-    'fuzzer/fuzzer.isolate',
-    'inspector_protocol_parser_test/inspector_protocol_parser_test.isolate',
-    'intl/intl.isolate',
-    'message/message.isolate',
-    'mjsunit/mjsunit.isolate',
-    'preparser/preparser.isolate',
-    'unittests/unittests.isolate',
-    'webkit/webkit.isolate',
-  ],
-}