[fusl] Don't syscall(SYS_unlink) in stdio

fusl/src/stdio/remove.c

Index: fusl/src/stdio/remove.c
diff --git a/fusl/src/stdio/remove.c b/fusl/src/stdio/remove.c
index ca5267b5c6dc2b8f8180f9ea0dc7d2b59b6d9a3c..3f9417fdd4b4c7c9fc62347980ca5f1b9c0c7220 100644
--- a/fusl/src/stdio/remove.c
+++ b/fusl/src/stdio/remove.c
@@ -1,14 +1,11 @@
 #include <stdio.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <unistd.h>
 #include "syscall.h"
 
 int remove(const char* path) {
-#ifdef SYS_unlink
-  int r = __syscall(SYS_unlink, path);
-#else
-  int r = __syscall(SYS_unlinkat, AT_FDCWD, path, 0);
-#endif
+  int r = unlink(path);
 #ifdef SYS_rmdir
   if (r == -EISDIR)
     r = __syscall(SYS_rmdir, path);