docs/releasing: do not pass any arguments to autogen.sh

This should just work (tm) with the default options. Plus the one we
pass is already the default, so just drop it.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>

docs/releasing.html

@@ -379,7 +379,7 @@ Here is one solution that I've been using.
 	chmod 755 -fR $__build_root; rm -rf $__build_root
 	mkdir -p $__build_root && cd $__build_root
 
-	$__mesa_root/autogen.sh --enable-llvm-shared-libs && make -j2 distcheck
+	$__mesa_root/autogen.sh && make -j2 distcheck
 
 	# Build check the tarballs (scons, linux)
 	tar -xaf mesa-$__version.tar.xz && cd mesa-$__version