Change submission API version v5 for DELETE calls

Refer to the issue and comment : https://github.com/topcoder-platform/community-app/issues/3545#issuecomment-572048899

Swagger Reference :

https://github.com/topcoder-platform/submissions-api/blob/267ff963ab513cc5db9be965badc5a2a61b92e71/docs/swagger.yaml#L406

PP branches :

https://github.com/topcoder-platform/topcoder-react-lib/tree/hot-fixes-3

In case required - https://github.com/topcoder-platform/community-app/tree/hot-fixes-5

@topcoder-platform/tcxcommunity @topcoder-platform/topcodercompetitors open for pickup

Final Submission Guidelines

Git issue link: https://github.com/topcoder-platform/community-app/issues/3575