Revert "squisher: optimize /system/priv-app/ too"

This reverts commit cde131df823491c1cf0946507dfbadf093374619.
Revert "Add build date to the final zip after squisher"

This reverts commit e8a79ed8291759d58fa580aa478aca417fefab5a.
Revert "Add release tools"

This reverts commit ab8cc082ccb5b5411a5f755ede08c5508ccde38b.
Revert "squisher: optimize /system/priv-app/ too"

This reverts commit cde131df823491c1cf0946507dfbadf093374619.

Conflicts:

	tools/squisher