Move font overlay packages to Pixel.

Include FontNotoSerifSourceOverlay to AOSP so developers have one option
to choose from in developer options.

Bug: 123570171
Test: make
Change-Id: Idd47899ce9e0a35d2dde35bfdcb8f9ffba61429a
diff --git a/target/product/handheld_vendor.mk b/target/product/handheld_vendor.mk
index 755ac70..dd59038 100644
--- a/target/product/handheld_vendor.mk
+++ b/target/product/handheld_vendor.mk
@@ -29,9 +29,7 @@
     DisplayCutoutEmulationCornerOverlay \
     DisplayCutoutEmulationDoubleOverlay \
     DisplayCutoutEmulationTallOverlay \
-    FontArbutusSourceOverlay \
-    FontArvoLatoOverlay \
-    FontRubikRubikOverlay \
+    FontNotoSerifSourceOverlay \
     IconShapeRoundedRectOverlay \
     IconShapeSquircleOverlay \
     IconShapeTeardropOverlay \