Remove unused include in partition_address_space.h

Should save ~36 MiB of compiler input size.

Bug: 40318405
Change-Id: I70f6f5f3effc6797a4b230490b69923138b456e3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6800088
Reviewed-by: Kentaro Hara <[email protected]>
Commit-Queue: David Sanders <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1493903}
NOKEYCHECK=True
GitOrigin-RevId: 1e1c57ddb0041a46950bbf786e37e83bde1e5633

Author: dsanders11

src/partition_alloc/partition_address_space.h

@@ -15,7 +15,6 @@
 #include "partition_alloc/partition_alloc_base/bits.h"
 #include "partition_alloc/partition_alloc_base/compiler_specific.h"
 #include "partition_alloc/partition_alloc_base/component_export.h"
-#include "partition_alloc/partition_alloc_base/files/platform_file.h"
 #include "partition_alloc/partition_alloc_base/notreached.h"
 #include "partition_alloc/partition_alloc_check.h"
 #include "partition_alloc/partition_alloc_config.h"