The comment mentioned a conflict with libwebsockets, but we actually still get this conflict even now that we don't use libwebsockets. Not sure what component is clashing but we should basically just keep this patch. Follow-up to #36823.
Fixes https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-02 Drop patch to disable VIA padlock since we no longer use libwebsockets, so there's no conflict anymore.