Widevine DRM is integrated into virtually all Android phones. If you're building your own ROM, you could remove the widevine.bXX files from the ROM image itself - I've never tested it, but it could probably soft-fail. There's no other way to remove it.
Anyway, this specific issue has already been fixed (but there are probably more bugs lurking either there on in other trustlets).
People are trusting their phones to keep their business and private data safe. It is unacceptable to expose 2 billion devices to extra-privileged vulnerabilities to appease some MPAA executives in their completely ineffectual schemes to control how the world consumes content.
