Remove incompatible tkinter example

examples/tkinter/exampleapp.py

@@ -1,13 +0,0 @@
-from tkinter import *
-
-def main():
-    root = Tk()
-    root.title("Python Example App")
-    t = Text(root)
-    t.insert(END, "Type stuff here.")
-    t.pack()
-
-    w = Label(root, text="Hello, world!")
-    w.pack()
-
-    root.mainloop()

examples/tkinter/installer.cfg

@@ -1,7 +0,0 @@
-[Application]
-name=My App
-version=1.0
-entry_point=exampleapp:main
-
-[Include]
-packages=exampleapp