Revert "Get the dex2oat host tool path from module dependency on..."

Revert submission 1211982-dex2oat-soong-dep

Reason for revert: Build failures. See b/148312086.

Reverted Changes:
Ibc427a9a8: Make dex2oat(d) visible for use as implicit dexpre...
I71df11c1e: Move the Once cache for dexpreopt.GlobalConfig int...
I38317f2d5: Get the dex2oat host tool path from module depende...
I440a09dba: Separate dexpreopt.GlobalSoongConfig to allow inde...

Bug: 148312086
Bug: 145934348
Exempt-From-Owner-Approval: Plain revert
Change-Id: I0cf6fef04434fd3c0b7957ee9abdcaabeb20b9d8

dexpreopt/testing.go

@@ -1,47 +0,0 @@
-// Copyright 2020 Google Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package dexpreopt
-
-import (
-	"android/soong/android"
-)
-
-type dummyToolBinary struct {
-	android.ModuleBase
-}
-
-func (m *dummyToolBinary) GenerateAndroidBuildActions(ctx android.ModuleContext) {}
-
-func (m *dummyToolBinary) HostToolPath() android.OptionalPath {
-	return android.OptionalPathForPath(android.PathForTesting("dex2oat"))
-}
-
-func dummyToolBinaryFactory() android.Module {
-	module := &dummyToolBinary{}
-	android.InitAndroidArchModule(module, android.HostSupported, android.MultilibFirst)
-	return module
-}
-
-func RegisterToolModulesForTest(ctx *android.TestContext) {
-	ctx.RegisterModuleType("dummy_tool_binary", dummyToolBinaryFactory)
-}
-
-func BpToolModulesForTest() string {
-	return `
-		dummy_tool_binary {
-			name: "dex2oatd",
-		}
-	`
-}