[dia] win32: drop removed functions

[Zander <zbrown src gnome org>]

commit 4c37d2826417444df875ceab33e5f949e1a22da8
Author: Zander Brown <zbrown gnome org>
Date:   Thu Apr 23 13:14:56 2020 +0100

    win32: drop removed functions

 lib/libdia.def | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/lib/libdia.def b/lib/libdia.def
index 0220d0c4..86f91c91 100644
--- a/lib/libdia.def
+++ b/lib/libdia.def
@@ -265,10 +265,8 @@ EXPORTS
  dia_get_data_directory
  dia_get_lib_directory
  dia_get_locale_directory
- dia_get_absolute_filename
  dia_relativize_filename
  dia_absolutize_filename
- dia_get_canonical_path
 
  dia_image_add_ref
  dia_image_filename