Remove netcfg's unused options.

Only "netcfg" for a list of interfaces and "netcfg <interface> dhcp" still
seem to be used.

Change-Id: I9f0b580474258fa648deb5287f98d8ec5533ca6f
diff --git a/libnetutils/dhcpclient.c b/libnetutils/dhcpclient.c
index 700b02f..a05b7cb 100644
--- a/libnetutils/dhcpclient.c
+++ b/libnetutils/dhcpclient.c
@@ -353,28 +353,28 @@
 static int is_valid_reply(dhcp_msg *msg, dhcp_msg *reply, int sz)
 {
     if (sz < DHCP_MSG_FIXED_SIZE) {
-        if (verbose) ALOGD("netcfg: Wrong size %d != %d\n", sz, DHCP_MSG_FIXED_SIZE);
+        if (verbose) ALOGD("Wrong size %d != %d\n", sz, DHCP_MSG_FIXED_SIZE);
         return 0;
     }
     if (reply->op != OP_BOOTREPLY) {
-        if (verbose) ALOGD("netcfg: Wrong Op %d != %d\n", reply->op, OP_BOOTREPLY);
+        if (verbose) ALOGD("Wrong Op %d != %d\n", reply->op, OP_BOOTREPLY);
         return 0;
     }
     if (reply->xid != msg->xid) {
-        if (verbose) ALOGD("netcfg: Wrong Xid 0x%x != 0x%x\n", ntohl(reply->xid),
-                          ntohl(msg->xid));
+        if (verbose) ALOGD("Wrong Xid 0x%x != 0x%x\n", ntohl(reply->xid),
+                           ntohl(msg->xid));
         return 0;
     }
     if (reply->htype != msg->htype) {
-        if (verbose) ALOGD("netcfg: Wrong Htype %d != %d\n", reply->htype, msg->htype);
+        if (verbose) ALOGD("Wrong Htype %d != %d\n", reply->htype, msg->htype);
         return 0;
     }
     if (reply->hlen != msg->hlen) {
-        if (verbose) ALOGD("netcfg: Wrong Hlen %d != %d\n", reply->hlen, msg->hlen);
+        if (verbose) ALOGD("Wrong Hlen %d != %d\n", reply->hlen, msg->hlen);
         return 0;
     }
     if (memcmp(msg->chaddr, reply->chaddr, msg->hlen)) {
-        if (verbose) ALOGD("netcfg: Wrong chaddr %x != %x\n", *(reply->chaddr),*(msg->chaddr));
+        if (verbose) ALOGD("Wrong chaddr %x != %x\n", *(reply->chaddr),*(msg->chaddr));
         return 0;
     }
     return 1;