Remove unused libnativehelper include am: d84348de31 am: 8c39e011b4 am: 418b231a04 am: 2da48a83cb

Original change: https://android-review.googlesource.com/c/platform/system/keymaster/+/1354334

Change-Id: I1d4bae3643bc1fda5051549159a57bf1048c64d6