remove a change introduced in testing

Reference: /n/atom/patch/applied2013/maplibprag
Date: Wed Jun 19 21:42:40 CES 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/src/cmd/map/map.h	Wed Jun 19 21:42:15 2013
+++ /sys/src/cmd/map/map.h	Wed Jun 19 21:42:15 2013
@@ -1,4 +1,4 @@
-#pragma	lib	"../map/libmap/libmap.a$O"
+#pragma	lib	"/sys/src/cmd/map/libmap/libmap.a$O"
 #pragma	src	"/sys/src/cmd/map/libmap"
 
 #ifndef PI