PEP8 cleanup: fix number of blank lines

Caught by pep8.

Reviewed-by: James Cameron <quozl@laptop.org>
Acked-by: Simon Schampijer <simon@laptop.org>
CC: Aleksey Lim <alsroot@member.fsf.org>

examples/radiopalette.py

@@ -17,6 +17,7 @@ box.pack_start(toolbar, False)
 text_view = gtk.TextView()
 box.pack_start(text_view)
 
+
 def echo(button, label):
     if not button.props.active:
         return

examples/toolbar.py

@@ -25,6 +25,7 @@ toolbar.toolbar.insert(tollbarbutton_2, -1)
 
 toolbar.toolbar.insert(gtk.SeparatorToolItem(), -1)
 
+
 def del_cb(widget):
     toolbar.toolbar.remove(tollbarbutton_3)
 del_b = gtk.Button('delete sub-widget #3')