Follow up of https://github.com/golang/vscode-go/issues/2509 In Jan 2023, delete [`src/goReferencesCodelens.ts`](https://github.com/golang/vscode-go/blob/ff8fb94d7f365fafb1088fb195c119e6abac1a00/src/goReferencesCodelens.ts)