Index: uspace/lib/c/include/async_obsolete.h
===================================================================
--- uspace/lib/c/include/async_obsolete.h	(revision 9934f7d3082d2ffdd107cc0c78d61d504b0f401e)
+++ uspace/lib/c/include/async_obsolete.h	(revision e03d545524b08bb45e88334bed00ae0f4a5311cc)
@@ -40,7 +40,4 @@
 #define LIBC_ASYNC_OBSOLETE_H_
 
-extern void async_obsolete_serialize_start(void);
-extern void async_obsolete_serialize_end(void);
-
 #define async_obsolete_send_0(phoneid, method, dataptr) \
 	async_obsolete_send_fast((phoneid), (method), 0, 0, 0, 0, (dataptr))