[gegl] Removed duplicate #define g4float_half

[Øyvind Kolås <ok src gnome org>]

commit 77a1a8240c7902350393146f4b93404759d3a2a6
Author: �yvind Kolås <pippin gimp org>
Date:   Sat Dec 5 02:35:52 2009 +0000

    Removed duplicate #define g4float_half
    
    As per bug #593935

 gegl/gegl-simd.h |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/gegl/gegl-simd.h b/gegl/gegl-simd.h
index f4e68be..ed1092a 100644
--- a/gegl/gegl-simd.h
+++ b/gegl/gegl-simd.h
@@ -18,7 +18,6 @@ typedef float g4float __attribute__ ((vector_size (4*sizeof(float))));
 #define g4float_zero      g4float_all(0.0)
 #define g4float_one       g4float_all(1.0)
 #define g4float_half      g4float_all(0.5)
-#define g4float_half      g4float_all(0.5)
 #define g4float_mul(a,val)  g4float_all(val)*(a)
 
 #ifdef USE_SSE