fix clippy

Author: Steve Lee (POWERSHELL HE/HIM) (from Dev Box)

pal/src/windows.rs

@@ -1,8 +1,6 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
-#![cfg(windows)]
-
 //#[link(name = "ext-ms-win-cng-rng-l1-1-0")]
 extern "C" {
     fn ProcessPrng(data: *mut u8, len: usize) -> u32;