selftests: bpf: remove duplicated include

Remove duplicated include.
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Acked-by: NSong Liu <songliubraving@fb.com>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>

tools/testing/selftests/bpf/test_flow_dissector.c

@@ -16,7 +16,6 @@
 #include <errno.h>
 #include <linux/if_packet.h>
 #include <linux/if_ether.h>
-#include <linux/if_packet.h>
 #include <linux/ipv6.h>
 #include <netinet/ip.h>
 #include <netinet/in.h>
@@ -25,7 +24,6 @@
 #include <stdbool.h>
 #include <stdlib.h>
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
 #include <sys/ioctl.h>
 #include <sys/socket.h>

tools/testing/selftests/bpf/test_maps.c

@@ -633,7 +633,6 @@ static void test_stackmap(int task, void *data)
 	close(fd);
 }
 
-#include <sys/socket.h>
 #include <sys/ioctl.h>
 #include <arpa/inet.h>
 #include <sys/select.h>

tools/testing/selftests/bpf/test_sockmap.c

@@ -10,7 +10,6 @@
 #include <unistd.h>
 #include <string.h>
 #include <errno.h>
-#include <sys/ioctl.h>
 #include <stdbool.h>
 #include <signal.h>
 #include <fcntl.h>