add more UTs, delete ununsed files

src/version/graphql.ts

@@ -1,19 +0,0 @@
-import {GitHub} from '@actions/github'
-import {GraphQlQueryResponseData} from '@octokit/graphql/dist-types/types'
-import {RequestParameters} from '@octokit/types/dist-types/RequestParameters'
-
-/**
- * Sends a GraphQL query request based on endpoint options
- *
- * @param {string} token Auth token
- * @param {string} query GraphQL query. Example: `'query { viewer { login } }'`.
- * @param {object} parameters URL, query or body parameters, as well as `headers`, `mediaType.{format|previews}`, `request`, or `baseUrl`.
- */
-export async function graphql(
-  token: string,
-  query: string,
-  parameters: RequestParameters
-): Promise<GraphQlQueryResponseData> {
-  const github = new GitHub(token)
-  return await github.graphql(query, parameters)
-}