Use nbconvert from pkgsMaster so we don't need patch anymore

Author: thomasjm

modules/exporters/fix-asciidoc.patch

@@ -28,7 +28,7 @@ with lib;
   };
 
   config = mkIf config.exporters.nbconvert.enable {
-    builtExporters.nbconvert = config.pkgs.callPackage ./nbconvert.nix {
+    builtExporters.nbconvert = config.pkgsMaster.callPackage ./nbconvert.nix {
       texliveScheme = config.pkgs.texlive.combined.${config.exporters.nbconvert.texliveScheme};
     };
   };

modules/exporters/module.nix

@@ -6,11 +6,7 @@
 }:
 
 let
-  nbconvert = python3.pkgs.nbconvert.overrideAttrs (oldAttrs: {
-    patches = oldAttrs.patches ++ [
-      ./fix-asciidoc.patch
-    ];
-  });
+  nbconvert = python3.pkgs.nbconvert;
 
   common = callPackage ../kernels/common.nix {};