delete source files not in target
Incremental OTAs were not removing files from the old build that don't
exist in the new build. Fix.
diff --git a/tools/releasetools/ota_from_target_files b/tools/releasetools/ota_from_target_files
index 547c65c..ea4c752 100755
--- a/tools/releasetools/ota_from_target_files
+++ b/tools/releasetools/ota_from_target_files
@@ -580,7 +580,9 @@
script.FormatPartition("userdata")
script.Print("Removing unneeded files...")
- script.DeleteFiles(["/"+i[0] for i in verbatim_targets])
+ script.DeleteFiles(["/"+i[0] for i in verbatim_targets] +
+ ["/"+i for i in sorted(source_data)
+ if i not in target_data])
if updating_boot:
# Produce the boot image by applying a patch to the current