Remove --disable-scrollkeeper from DISTCHECK_CONFIGURE_FLAGS.

We stopped using ScrollKeeper ages ago.

Makefile.am

@@ -144,12 +144,9 @@ MAINTAINERCLEANFILES =			\
 	$(srcdir)/po/quot.sed		\
 	$(srcdir)/po/remove-potcdate.sin
 
-# Scrollkeeper must be disabled for distcheck to work because
-# distcheck uses a custom prefix.  See GNOME bug #354357.
 DISTCHECK_CONFIGURE_FLAGS =		\
 	--enable-gtk-doc		\
 	--disable-goa			\
-	--disable-scrollkeeper		\
 	--enable-test-component		\
 	--disable-image-inline		\
 	--disable-pst-import		\