Delete SyspropMutator (again)

This CL essentially un-reverts aosp/2119952, now that the issue
has been resolved.

Bug: 226199990
Test: m
Change-Id: I3b828eb7f7cf54023c9e1d3229cf1ff7c85ab6dd

cc/sysprop.go

@@ -1,69 +0,0 @@
-// Copyright (C) 2019 The Android Open Source Project
-//
-// 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 cc
-
-// This file contains a map to redirect dependencies towards sysprop_library.
-// As sysprop_library has to support both Java and C++, sysprop_library internally
-// generates cc_library and java_library. For example, the following sysprop_library
-//
-//     sysprop_library {
-//         name: "foo",
-//     }
-//
-// will internally generate with prefix "lib"
-//
-//     cc_library {
-//         name: "libfoo",
-//     }
-//
-// When a cc module links against "foo", build system will redirect the
-// dependency to "libfoo". To do that, SyspropMutator gathers all sysprop_library,
-// records their cc implementation library names to a map. The map will be used in
-// cc.Module.DepsMutator.
-
-import (
-	"sync"
-
-	"android/soong/android"
-)
-
-type syspropLibraryInterface interface {
-	BaseModuleName() string
-	CcImplementationModuleName() string
-}
-
-var (
-	syspropImplLibrariesKey  = android.NewOnceKey("syspropImplLibirares")
-	syspropImplLibrariesLock sync.Mutex
-)
-
-func syspropImplLibraries(config android.Config) map[string]string {
-	return config.Once(syspropImplLibrariesKey, func() interface{} {
-		return make(map[string]string)
-	}).(map[string]string)
-}
-
-// gather list of sysprop libraries
-func SyspropMutator(mctx android.BottomUpMutatorContext) {
-	if m, ok := mctx.Module().(syspropLibraryInterface); ok {
-		syspropImplLibraries := syspropImplLibraries(mctx.Config())
-		syspropImplLibrariesLock.Lock()
-		defer syspropImplLibrariesLock.Unlock()
-
-		// BaseModuleName is the name of sysprop_library
-		// CcImplementationModuleName is the name of cc_library generated by sysprop_library
-		syspropImplLibraries[m.BaseModuleName()] = m.CcImplementationModuleName()
-	}
-}