Revert "[inspector] added inspector test runner [part 1-2]"

test/inspector/BUILD.gn

-# 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.
-
-import("../../gni/v8.gni")
-
-v8_executable("inspector-test") {
-  testonly = true
-
-  sources = [
-    "inspector-impl.cc",
-    "inspector-impl.h",
-    "task-runner.cc",
-    "task-runner.h",
-  ]
-
-  configs = [
-    "../..:external_config",
-    "../..:internal_config_base",
-  ]
-
-  deps = [
-    "../..:v8_libplatform",
-    "//build/config/sanitizers:deps",
-    "//build/win:default_exe_manifest",
-  ]
-
-  if (is_component_build) {
-    # inspector-test can't be built against a shared library, so we
-    # need to depend on the underlying static target in that case.
-    deps += [ "../..:v8_maybe_snapshot" ]
-  } else {
-    deps += [ "../..:v8" ]
-  }
-
-  cflags = []
-  ldflags = []
-}