GPU-GPU direct was never released before

ChangeLog

@@ -241,9 +241,6 @@ Small changes:
   * Use C99 variadic macro support, not GNU.
   * Fix performance regression: dmda queues were inadvertently made
     LIFOs in r9611.
-  * Invert GPU-GPU direct transfer control environment variable name,
-    i.e environment variable STARPU_ENABLE_CUDA_GPU_GPU_DIRECT should
-    be used instead of STARPU_DISABLE_CUDA_GPU_GPU_DIRECT.
 
 StarPU 1.0.3 (svn revision 7379)
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