blender: remove obsolete comment about license

The Blender License was never activated or used, and does not nullify
that Blender itself is license under the GPL. The “indefinite
cancellation” also occurred in 2005 (over 20 years ago).

pkgs/by-name/bl/blender/package.nix

@@ -451,8 +451,6 @@ stdenv'.mkDerivation (finalAttrs: {
   meta = {
     description = "3D Creation/Animation/Publishing System";
     homepage = "https://www.blender.org";
-    # They comment two licenses: GPLv2 and Blender License, but they
-    # say: "We've decided to cancel the BL offering for an indefinite period."
     # OptiX, enabled with cudaSupport, is non-free.
     license = with lib.licenses; [ gpl2Plus ] ++ lib.optional cudaSupport nvidiaCudaRedist;