[ASAN] Re-enable fgets_fputs test for darwin.
It seems to be passing, at least on the bots I've seen.
// RUN: not %run %t 1 %t-testdata 2>&1 | FileCheck %s --check-prefix=CHECK-FGETS
// RUN: not %run %t 2 2>&1 | FileCheck %s --check-prefix=CHECK-FPUTS
// RUN: not %run %t 3 2>&1 | FileCheck %s --check-prefix=CHECK-PUTS
-// XFAIL: android, darwin
+// XFAIL: android
#include <assert.h>
#include <stdio.h>
