diff --git a/winsup/cygwin/testsuite/winsup.api/samples/sample-pass.c b/winsup/cygwin/testsuite/winsup.api/samples/sample-pass.c
deleted file mode 100644
index 893a0b605..000000000
--- a/winsup/cygwin/testsuite/winsup.api/samples/sample-pass.c
+++ /dev/null
@@ -1,4 +0,0 @@
-main()
-{
-  return 0;
-}
diff --git a/winsup/cygwin/testsuite/winsup.api/samples/xf-sample-fail.c b/winsup/cygwin/testsuite/winsup.api/samples/xf-sample-fail.c
deleted file mode 100644
index d8beb90be..000000000
--- a/winsup/cygwin/testsuite/winsup.api/samples/xf-sample-fail.c
+++ /dev/null
@@ -1,4 +0,0 @@
-main()
-{
-  return 1;
-}
diff --git a/winsup/cygwin/testsuite/winsup.api/samples/xf-sample-miscompile.c b/winsup/cygwin/testsuite/winsup.api/samples/xf-sample-miscompile.c
deleted file mode 100644
index bc0d21d2e..000000000
--- a/winsup/cygwin/testsuite/winsup.api/samples/xf-sample-miscompile.c
+++ /dev/null
@@ -1 +0,0 @@
-foo bar grill