Remove all //blimp code.

blimp/BUILD.gn

-# Copyright 2015 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("//build/config/chrome_build.gni")
-import("//testing/test.gni")
-
-# Convenience meta-target for all of Blimp's production & test code.
-group("blimp") {
-  # In spite of the name, this really just means that non-test targets
-  # cannot depend on this one, and that it can depend on test targets,
-  # which fits how we intend to use it.
-  testonly = true
-
-  deps = [
-    ":blimp_tests",
-    "//blimp/common",
-  ]
-}
-
-# Builds all Blimp test code (unit tests, test APKs).
-group("blimp_tests") {
-  testonly = true
-
-  deps = [
-    ":blimp_unittests",
-  ]
-
-  if (is_linux) {
-    deps += [ "//blimp/test/fake_engine:fake_engine_app_tests" ]
-  }
-}
-
-test("blimp_unittests") {
-  deps = [
-    "//blimp/common:unit_tests",
-    "//blimp/test:run_all_unittests",
-  ]
-
-  if (is_android) {
-    enable_multidex = true
-  }
-}