diff --git a/tools/testing/selftests/vm/mremap_test.c b/tools/testing/selftests/vm/mremap_test.c
index 8f4dbbd60c09..efcbf537b3d5 100644
--- a/tools/testing/selftests/vm/mremap_test.c
+++ b/tools/testing/selftests/vm/mremap_test.c
@@ -66,30 +66,6 @@ enum {
 	.expect_failure = should_fail				\
 }
 
-/*
- * Returns false if the requested remap region overlaps with an
- * existing mapping (e.g text, stack) else returns true.
- */
-static bool is_remap_region_valid(void *addr, unsigned long long size)
-{
-	void *remap_addr = NULL;
-	bool ret = true;
-
-	/* Use MAP_FIXED_NOREPLACE flag to ensure region is not mapped */
-	remap_addr = mmap(addr, size, PROT_READ | PROT_WRITE,
-					 MAP_FIXED_NOREPLACE | MAP_ANONYMOUS | MAP_SHARED,
-					 -1, 0);
-
-	if (remap_addr == MAP_FAILED) {
-		if (errno == EEXIST)
-			ret = false;
-	} else {
-		munmap(remap_addr, size);
-	}
-
-	return ret;
-}
-
 /* Returns mmap_min_addr sysctl tunable from procfs */
 static unsigned long long get_mmap_min_addr(void)
 {