Revert "Integrate seedvault"

This reverts commit 50f0a4f7789cbe70bfcfcfe6a392c7b04b7de979.
diff --git a/foss.mk b/foss.mk
index 53273ad..61737f9 100644
--- a/foss.mk
+++ b/foss.mk
@@ -2,6 +2,4 @@
 
 PRODUCT_PACKAGES += \
 	FDroidPrivilegedExtension \
-	Provision \
-	Seedvault \
-	SeedvaultOverlay
+	Provision