Revert "allow, but discourage, requestBody for GET, HEAD, DELETE"#2114

MikeRalphson merged 1 commit intov3.0.3-devOAI/OpenAPI-Specification:v3.0.3-devfrom

revert-1937-issue-1801/GET_DELETE_requestBodyOAI/OpenAPI-Specification:revert-1937-issue-1801/GET_DELETE_requestBodyCopy head branch name to clipboard