NetBpfLoad: remove spurious header includes

(particularly problematic on host builds where host headers are ancient...)

Bug: 205608149
Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Iae64b900464e7584ad657f18d8101993fd8c8e33
diff --git a/bpf/loader/NetBpfLoad.cpp b/bpf/loader/NetBpfLoad.cpp
index 22f12d1..99498bc 100644
--- a/bpf/loader/NetBpfLoad.cpp
+++ b/bpf/loader/NetBpfLoad.cpp
@@ -17,7 +17,6 @@
 #define LOG_TAG "NetBpfLoad"
 
 #include <arpa/inet.h>
-#include <cstdlib>
 #include <dirent.h>
 #include <elf.h>
 #include <errno.h>
@@ -26,8 +25,6 @@
 #include <fstream>
 #include <inttypes.h>
 #include <iostream>
-#include <linux/bpf.h>
-#include <linux/elf.h>
 #include <linux/unistd.h>
 #include <log/log.h>
 #include <net/if.h>