[pitivi] timeline: Remove unused SELECT_BETWEEN constant

[Mathieu Duponchelle <mathieudu src gnome org>]

commit ae42c3538a60fe1a539c97dd7a8462aac15937d4
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Wed Dec 25 10:13:35 2013 +0100

    timeline: Remove unused SELECT_BETWEEN constant

 pitivi/utils/timeline.py |    8 +++-----
 1 files changed, 3 insertions(+), 5 deletions(-)
---
diff --git a/pitivi/utils/timeline.py b/pitivi/utils/timeline.py
index c612760..40c40ed 100644
--- a/pitivi/utils/timeline.py
+++ b/pitivi/utils/timeline.py
@@ -29,14 +29,12 @@ from pitivi.utils.signal import Signallable
 
 
 # Selection modes
+# Set the selection to the given set.
 SELECT = 0
-"""Set the selection to the given set."""
+# Remove the given set from the selection.
 UNSELECT = 1
-"""Remove the given set from the selection."""
+# Extend the selection with the given set.
 SELECT_ADD = 2
-"""Extend the selection with the given set"""
-SELECT_BETWEEN = 3
-"""Select a range of clips"""
 
 
 #------------------------------------------------------------------------------#