Revert "Fix builds with absolute OUT_DIR"

This reverts commit b1d1e0e6bd0f4034752a7c7d15f44e967c485d7b.

Reason for revert: b/162063775

Change-Id: Ifcdba9d918d2bd0b5ab7ab02ccdc727a844a5556
diff --git a/android/prebuilt_build_tool.go b/android/prebuilt_build_tool.go
index d457da4..a9f29ef 100644
--- a/android/prebuilt_build_tool.go
+++ b/android/prebuilt_build_tool.go
@@ -59,15 +59,9 @@
 	installedPath := PathForModuleOut(ctx, t.ModuleBase.Name())
 	deps := PathsForModuleSrc(ctx, t.properties.Deps)
 
-	var relPath string
-	if filepath.IsAbs(installedPath.String()) {
-		relPath = filepath.Join(absSrcDir, sourcePath.String())
-	} else {
-		var err error
-		relPath, err = filepath.Rel(path.Dir(installedPath.String()), sourcePath.String())
-		if err != nil {
-			ctx.ModuleErrorf("Unable to generate symlink between %q and %q: %s", installedPath.String(), sourcePath.String(), err)
-		}
+	relPath, err := filepath.Rel(path.Dir(installedPath.String()), sourcePath.String())
+	if err != nil {
+		ctx.ModuleErrorf("Unabled to generate symlink between %q and %q: %s", installedPath.String(), sourcePath.String())
 	}
 
 	ctx.Build(pctx, BuildParams{