Use XORG_MANPAGE_SECTIONS to get the right OS-specific man page sections
instead of the hardcoded Linux/BSD sections that don't match SysV/Solaris.

diff --git a/configure.ac b/configure.ac
index 238e3af..6fb5476 100644
--- a/configure.ac
+++ b/configure.ac
@@ -170,8 +170,6 @@ AC_DEFINE(X_USE_REGION_NULL,1,[Compatibility define for older Xen])
 AC_DEFINE(X_HAVE_XAAGETROP,1,[Compatibility define for older Xen])
 AC_DEFINE(X_NEED_I2CSTART,1,[Compatibility define for older Xen])
 
-DRIVER_MAN_SUFFIX="4"
-AC_SUBST([DRIVER_MAN_SUFFIX])
 
 XORG_MANPAGE_SECTIONS
 XORG_RELEASE_VERSION