[gnumeric] Compilation: remove unused ugly macro.

[Morten Welinder <mortenw src gnome org>]

commit 2a11a2d2d8168ee230de2f5c33830e924b4f2ad2
Author: Morten Welinder <terra gnome org>
Date:   Fri Dec 6 15:55:20 2013 -0500

    Compilation: remove unused ugly macro.

 src/complex.h |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/src/complex.h b/src/complex.h
index 7efafc4..a4a78e1 100644
--- a/src/complex.h
+++ b/src/complex.h
@@ -56,8 +56,6 @@ G_BEGIN_DECLS
 #define complex_from_polar go_complex_from_polar
 #endif
 
-#define complex_invalid(c_) complex_init((c_),gnm_nan,gnm_nan)
-
 /* ------------------------------------------------------------------------- */
 
 char *complex_to_string (complex_t const *src, char imunit);