derived from here:
http://pkgs.fedoraproject.org/cgit/pypoppler.git/commit/?id=f7475801b5176fd8523cc1ff354ab954f3cd44b4

diff -Naur pypoppler-0.12.1.orig/poppler.defs pypoppler-0.12.1/poppler.defs
--- pypoppler-0.12.1.orig/poppler.defs	2012-08-28 19:30:12.804472077 +0200
+++ pypoppler-0.12.1/poppler.defs	2012-08-28 19:31:28.035467000 +0200
@@ -1646,62 +1646,6 @@
   (return-type "GType")
 )
 
-(define-method render_to_pixbuf
-  (of-object "PopplerPage")
-  (c-name "poppler_page_render_to_pixbuf")
-  (return-type "none")
-  (unblock-threads #t)
-  (parameters
-    '("int" "src_x")
-    '("int" "src_y")
-    '("int" "src_width")
-    '("int" "src_height")
-    '("double" "scale")
-    '("int" "rotation")
-    '("GdkPixbuf*" "pixbuf")
-  )
-)
-
-(define-method render_to_pixbuf_for_printing
-  (of-object "PopplerPage")
-  (c-name "poppler_page_render_to_pixbuf_for_printing")
-  (return-type "none")
-  (unblock-threads #t)
-  (parameters
-    '("int" "src_x")
-    '("int" "src_y")
-    '("int" "src_width")
-    '("int" "src_height")
-    '("double" "scale")
-    '("int" "rotation")
-    '("GdkPixbuf*" "pixbuf")
-  )
-)
-
-(define-method get_thumbnail_pixbuf
-  (of-object "PopplerPage")
-  (c-name "poppler_page_get_thumbnail_pixbuf")
-  (return-type "GdkPixbuf*")
-  (unblock-threads #t)
-)
-
-(define-method render_selection_to_pixbuf
-  (of-object "PopplerPage")
-  (c-name "poppler_page_render_selection_to_pixbuf")
-  (return-type "none")
-  (unblock-threads #t)
-  (parameters
-    '("gdouble" "scale")
-    '("int" "rotation")
-    '("GdkPixbuf*" "pixbuf")
-    '("PopplerRectangle*" "selection")
-    '("PopplerRectangle*" "old_selection")
-    '("PopplerSelectionStyle" "style")
-    '("GdkColor*" "glyph_color")
-    '("GdkColor*" "background_color")
-  )
-)
-
 (define-method render
   (of-object "PopplerPage")
   (c-name "poppler_page_render")