fix: remove unused code (#2202)

Co-authored-by: GitHub Action <action@github.com>

src/main.ts

@@ -291,11 +291,8 @@ export async function run(): Promise<void> {
   }
 }
 
-/* istanbul ignore if */
-if (!process.env.TESTING) {
-  // eslint-disable-next-line github/no-then
-  run().catch(e => {
-    core.setFailed(e.message || e)
-    process.exit(1)
-  })
-}
+// eslint-disable-next-line github/no-then
+run().catch(e => {
+  core.setFailed(e.message || e)
+  process.exit(1)
+})