ruby: tidy up methodSignatureSuccessorNodeRanked predicate
ruby: tidy up methodSignatureSuccessorNodeRanked predicate

github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql