[librsvg] Remove unused prototype

[Federico Mena Quintero <federico src gnome org>]

commit edb8827d501b75d26e8098bc7899559f1b41fae3
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed May 31 09:41:11 2017 -0500

    Remove unused prototype

 rsvg-css.h |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/rsvg-css.h b/rsvg-css.h
index 719820f..f9f6109 100644
--- a/rsvg-css.h
+++ b/rsvg-css.h
@@ -117,8 +117,6 @@ void rsvg_aspect_ratio_compute (guint32 aspect,
                                 double *dest_height);
 
 G_GNUC_INTERNAL
-int        rsvg_css_parse_aspect_ratio     (const char *str);
-G_GNUC_INTERNAL
 PangoStyle   rsvg_css_parse_font_style      (const char *str, gboolean * inherit);
 G_GNUC_INTERNAL
 PangoVariant rsvg_css_parse_font_variant    (const char *str, gboolean * inherit);