Revert "Dexpreopt soong modules inside soong"

This reverts commit 29ff88741e.

Test: none
Bug: 119412419

java/config/config.go

@@ -126,7 +126,6 @@ func init() {
 	pctx.HostJavaToolVariable("JetifierJar", "jetifier.jar")
 
 	pctx.HostBinToolVariable("SoongJavacWrapper", "soong_javac_wrapper")
-	pctx.HostBinToolVariable("DexpreoptGen", "dexpreopt_gen")
 
 	pctx.VariableFunc("JavacWrapper", func(ctx android.PackageVarContext) string {
 		if override := ctx.Config().Getenv("JAVAC_WRAPPER"); override != "" {
@@ -153,6 +152,4 @@ func init() {
 
 	pctx.SourcePathsVariable("ManifestMergerJars", " ", ManifestMergerClasspath...)
 	pctx.SourcePathsVariable("ManifestMergerClasspath", ":", ManifestMergerClasspath...)
-
-	pctx.HostBinToolVariable("ZipAlign", "zipalign")
 }