Revert "Use R8 for resource shrinking"

Revert submission 2816534-r8resourceshrinking

Reason for revert: b/309075997

Reverted changes: /q/submissionid:2816534-r8resourceshrinking

Change-Id: Ic173491eaf22967fbad14fbcc85f6ddb2cf54d23
diff --git a/java/app_builder.go b/java/app_builder.go
index 943ce31..d397ff7 100644
--- a/java/app_builder.go
+++ b/java/app_builder.go
@@ -52,7 +52,7 @@
 	})
 
 func CreateAndSignAppPackage(ctx android.ModuleContext, outputFile android.WritablePath,
-	packageFile, jniJarFile, dexJarFile android.Path, certificates []Certificate, deps android.Paths, v4SignatureFile android.WritablePath, lineageFile android.Path, rotationMinSdkVersion string) {
+	packageFile, jniJarFile, dexJarFile android.Path, certificates []Certificate, deps android.Paths, v4SignatureFile android.WritablePath, lineageFile android.Path, rotationMinSdkVersion string, shrinkResources bool) {
 
 	unsignedApkName := strings.TrimSuffix(outputFile.Base(), ".apk") + "-unsigned.apk"
 	unsignedApk := android.PathForModuleOut(ctx, unsignedApkName)
@@ -71,6 +71,12 @@
 		Output:    unsignedApk,
 		Implicits: deps,
 	})
+
+	if shrinkResources {
+		shrunkenApk := android.PathForModuleOut(ctx, "resource-shrunken", unsignedApk.Base())
+		ShrinkResources(ctx, unsignedApk, shrunkenApk)
+		unsignedApk = shrunkenApk
+	}
 	SignAppPackage(ctx, outputFile, unsignedApk, certificates, v4SignatureFile, lineageFile, rotationMinSdkVersion)
 }