sci-visualization/mayavi: remove unused patch

Closes: https://github.com/gentoo/gentoo/pull/3709

sci-visualization/mayavi/files/mayavi-4.1.0-vtkQt.patch

@@ -1,25 +0,0 @@
-From 2fece6b29c9f3eefa523c8131cce02f724e437f3 Mon Sep 17 00:00:00 2001
-Message-Id: <2fece6b29c9f3eefa523c8131cce02f724e437f3.1330934918.git.jlec@gentoo.org>
-From: martin <martin@think.(none)>
-Date: Sun, 19 Feb 2012 10:43:39 -0500
-Subject: [PATCH] FIX: don't wrap vtkQt classes
-
----
- tvtk/code_gen.py |    1 +
- 1 files changed, 1 insertions(+), 0 deletions(-)
-
-diff --git a/tvtk/code_gen.py b/tvtk/code_gen.py
-index f0b0b60..377801e 100644
---- a/tvtk/code_gen.py
-+++ b/tvtk/code_gen.py
-@@ -92,6 +92,7 @@ class TVTKGenerator:
-         #classes = dir(vtk)
-         classes = [x.name for x in wrap_gen.get_tree() \
-                    if x.name.startswith('vtk') and \
-+                   not x.name.startswith('vtkQt') and \
-                    not issubclass(getattr(vtk, x.name), object) ]
-         for nodes in tree:
-             for node in nodes:
--- 
-1.7.8.5
-