feat!: Remove manual API calling tests

These tests are no longer used since the switch to OctokitWrapper, and
conflict with packages required for the implementation of throttling, so
remove them.

test/utils.ts

@@ -1,5 +1,3 @@
-import fetch from "node-fetch"
-
 export function getToken(first: boolean): string {
   const token = process.env["GITHUB_TOKEN"] || ""
   if (!token && first) {
@@ -12,31 +10,3 @@ export function getToken(first: boolean): string {
 
   return token
 }
-
-/**
- * Retrieves the release from a GitHub repository. This function allows to fetch
- * either the latest release or the latest pre-release ("edge" release).
- *
- * @param {string} repo - The GitHub repository to fetch the release from,
- * in the format 'owner/repo'.
- * @param {boolean} [prerelease] - If true, fetches the latest pre-release.
- * If false or undefined, fetches the latest release regardless of whether
- * it's a pre-release or not.
- *
- * @returns {Promise<string>} A Promise that resolves to a string representing the tag name
- * of the found release. If no release is found, the Promise resolves to 'Release not found'.
- */
-export async function getReleaseTag(
-  repo: string,
-  prerelease?: boolean
-): Promise<string> {
-  const response = await fetch(`https://api.github.com/repos/${repo}/releases`)
-  const releases = await response.json()
-
-  const release = releases.find(
-    /* eslint-disable-next-line @typescript-eslint/no-explicit-any */
-    (rel: any) => prerelease === undefined || rel.prerelease === prerelease
-  )
-
-  return release ? release.tag_name : "No release found"
-}