Revert of Introduce mojo interface for collecting StackSamplingProfiler data

components/metrics/public/cpp/BUILD.gn

Index: components/metrics/public/cpp/BUILD.gn
diff --git a/components/metrics/public/cpp/BUILD.gn b/components/metrics/public/cpp/BUILD.gn
deleted file mode 100644
index 4764dce123a94b7de7d1be058d0e91b466c67e74..0000000000000000000000000000000000000000
--- a/components/metrics/public/cpp/BUILD.gn
+++ /dev/null
@@ -1,25 +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.
-
-import("//mojo/public/tools/bindings/mojom.gni")
-
-source_set("unit_tests") {
-  testonly = true
-  sources = [
-    "call_stack_profile_struct_traits_unittest.cc",
-  ]
-
-  # iOS is not supported by the profiler and the ios-simulator bot chokes on
-  # this test.
-  if (is_ios) {
-    sources -= [ "call_stack_profile_struct_traits_unittest.cc" ]
-  }
-
-  deps = [
-    "//base",
-    "//components/metrics/public/interfaces:mojo_test_bindings",
-    "//mojo/public/cpp/bindings",
-    "//testing/gtest",
-  ]
-}