already defined several lines before in block-obj-y

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

Makefile

@@ -108,7 +108,7 @@ obj-y += sd.o ssi-sd.o
 obj-y += bt.o bt-host.o bt-vhci.o bt-l2cap.o bt-sdp.o bt-hci.o bt-hid.o usb-bt.o
 obj-y += bt-hci-csr.o
 obj-y += buffered_file.o migration.o migration-tcp.o net.o qemu-sockets.o
-obj-y += qemu-char.o aio.o net-checksum.o savevm.o cache-utils.o
+obj-y += qemu-char.o aio.o net-checksum.o savevm.o
 obj-y += msmouse.o ps2.o
 obj-y += qdev.o qdev-properties.o ssi.o