pythonPackages.pycdio: clean up patching

The BSDI driver is not used by platforms supported by Nixpkgs.

pkgs/top-level/python-packages.nix

···
       sha256 = "1a1h0lmfl56a2a9xqhacnjclv81nv3906vdylalybxrk4bhrm3hj";
     };
 
-    prePatch = ''
-      sed -i -e "s|if type(driver_id)==int|if type(driver_id) in (int, long)|g" cdio.py
-    '';
+    prePatch = "sed -i -e '/DRIVER_BSDI/d' pycdio.py";
 
     preConfigure = ''
       patchShebangs .