Revert^4 "Add TARGET_SYSTEM_PROP to system build.prop"

072c0e4fcb3f9952e0d0dda7d56a595bca55dfcb

Change-Id: I53a36f415a9bd472170f030f115039e623769acf
diff --git a/android/config.go b/android/config.go
index eff9fdd..92aae7e 100644
--- a/android/config.go
+++ b/android/config.go
@@ -2077,3 +2077,7 @@
 
 	return Bool(c.productVariables.Eng)
 }
+
+func (c *config) SystemPropFiles(ctx PathContext) Paths {
+	return PathsForSource(ctx, c.productVariables.SystemPropFiles)
+}