o LLC: remove unneeded EXPORT_SYMBOLs from llc_sap

Now all is in llc2.ko, so no need for exporting those symbols.
Also llc_build_and_send_ui_pkt is now in llc_output.c, where it
is being exported.

net/llc/llc_sap.c

@@ -315,9 +315,3 @@ void llc_sap_handler(struct llc_sap *sap, struct sk_buff *skb)
 	} else
 		kfree_skb(skb);
 }
-
-EXPORT_SYMBOL(llc_save_primitive);
-EXPORT_SYMBOL(llc_build_and_send_test_pkt);
-EXPORT_SYMBOL(llc_build_and_send_ui_pkt);
-EXPORT_SYMBOL(llc_build_and_send_xid_pkt);
-EXPORT_SYMBOL(llc_sap_handler);