Remove wineconf.libs from EXTRASUBDIRS.

diff --git a/tools/Makefile.in b/tools/Makefile.in
index e0f6494..52cb32a 100644
--- a/tools/Makefile.in
+++ b/tools/Makefile.in
@@ -25,9 +25,7 @@
 
 INSTALLSUBDIRS = $(SUBDIRS)
 
-EXTRASUBDIRS = \
-	winapi_check \
-	wineconf.libs
+EXTRASUBDIRS = winapi_check
 
 all: $(PROGRAMS) $(SUBDIRS)