python3Packages.wxPython_4_0: remove manual wrapPythonPrograms invocation

This was causing programs to be wrapped twice, as wrapping occurs automatically
during the fixup phase.

pkgs/development/python-modules/wxPython/4.0.nix

@@ -48,7 +48,6 @@ buildPythonPackage rec {
 
   installPhase = ''
     ${python.interpreter} setup.py install --skip-build --prefix=$out
-    wrapPythonPrograms
   '';
 
   passthru = { inherit wxGTK; };