Revert of Mojo interface for Leak Detector on remote process

components/metrics/leak_detector/leak_detector_remote.mojom

Index: components/metrics/leak_detector/leak_detector_remote.mojom
diff --git a/components/metrics/leak_detector/leak_detector_remote.mojom b/components/metrics/leak_detector/leak_detector_remote.mojom
deleted file mode 100644
index 821f40786f883509e366325d39138b885b768251..0000000000000000000000000000000000000000
--- a/components/metrics/leak_detector/leak_detector_remote.mojom
+++ /dev/null
@@ -1,11 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-module metrics;
-
-interface LeakDetectorRemote {
-  GetParams() => (string serialized_params);
-
-  SendLeakReports(array<string> serialized_reports);
-};