tests: threads::basic: remove unused function `exit_abruptly`
diff --git a/tests/threads/basic.c b/tests/threads/basic.c
index a9310bb..af60490 100644
--- a/tests/threads/basic.c
+++ b/tests/threads/basic.c
@@ -54,12 +54,6 @@
 {
 	return param;
 }
-
-static void *exit_abruptly(void *param)
-{
-	git_thread_exit(param);
-	return NULL;
-}
 #endif
 
 void test_threads_basic__exit(void)