remove spurious line from widget variables example
(closes SF patch #1094815)
diff --git a/Doc/lib/tkinter.tex b/Doc/lib/tkinter.tex
index d45b835..6a60982 100644
--- a/Doc/lib/tkinter.tex
+++ b/Doc/lib/tkinter.tex
@@ -621,7 +621,6 @@
         self.entrythingy = Entry()
         self.entrythingy.pack()
         
-        self.button.pack()
         # here is the application variable
         self.contents = StringVar()
         # set it to some value