pythonPackages.qasm2image: remove

Removed due to: prolonged breakage (at least since Jan. 2020),
inactivity on the upstream repo (no commits since November 2018),
and no longer being compatible with pythonPackages.qiskit.

pkgs/development/python-modules/qasm2image/default.nix

@@ -1,53 +0,0 @@
-{ lib
-, buildPythonPackage
-, fetchFromGitHub
-, cairocffi
-, cairosvg
-, cffi
-, qiskit
-, svgwrite
-, colorama
-, python
-, pythonOlder
-}:
-
-buildPythonPackage {
-  pname = "qasm2image";
-  version = "0.8.0";
-
-  src = fetchFromGitHub {
-    owner = "nelimee";
-    repo = "qasm2image";
-    rev = "2c01756946ba9782973359dbd7bbf6651af6bee5";
-    sha256 = "1bnkzv7wrdvrq71dmsqanb3v2hcsxh5zaglfcxm2d9zzpmvb4a2n";
-  };
-
-  disabled = pythonOlder "3.5";
-
-  propagatedBuildInputs = [
-    cairocffi
-    cairosvg
-    cffi
-    qiskit
-    svgwrite
-  ];
-
-  checkInputs = [
-    colorama
-  ];
-  checkPhase = ''
-    ${python.interpreter} tests/launch_tests.py
-  '';
-
-  LC_ALL="en_US.UTF-8";
-
-  meta = {
-    description = "A Python module to visualise quantum circuit";
-    homepage    = "https://github.com/nelimeee/qasm2image";
-    license     = lib.licenses.cecill-b;
-    maintainers = with lib.maintainers; [
-      pandaman
-    ];
-    broken = true;  # last update Oct 2018, failed tests don't error the build, and out-of-date with latest python3Packages.qiskit
-  };
-}

pkgs/top-level/python-packages.nix

@@ -6192,7 +6192,7 @@ in {
 
   pyzufall = callPackage ../development/python-modules/pyzufall { };
 
-  qasm2image = callPackage ../development/python-modules/qasm2image { };
+  qasm2image = throw "qasm2image is no longer maintained (since November 2018), and is not compatible with the latest pythonPackages.qiskit versions."; # added 2020-12-09
 
   qdarkstyle = callPackage ../development/python-modules/qdarkstyle { };