diff --git a/web_dashboard_tile/migrations/7.0.1.0/post-migration-color.py b/web_dashboard_tile/migrations/7.0.1.0/post-migration-color.py
deleted file mode 100644
index f8c33840..00000000
--- a/web_dashboard_tile/migrations/7.0.1.0/post-migration-color.py
+++ /dev/null
@@ -1,48 +0,0 @@
-# -*- coding: utf-8 -*-
-##############################################################################
-#
-#    OpenERP, Open Source Management Solution
-#    Copyright (C) 2015-Today GRAP
-#    @author Sylvain LE GAL (https://twitter.com/legalsylvain)
-#
-#    This program is free software: you can redistribute it and/or modify
-#    it under the terms of the GNU Affero General Public License as
-#    published by the Free Software Foundation, either version 3 of the
-#    License, or (at your option) any later version.
-#
-#    This program is distributed in the hope that it will be useful,
-#    but WITHOUT ANY WARRANTY; without even the implied warranty of
-#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#    GNU Affero General Public License for more details.
-#
-#    You should have received a copy of the GNU Affero General Public License
-#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
-##############################################################################
-
-
-COLOR_NUMERIC_TO_RVB = {
-    0: '#006015',
-    1: '#CD2513',
-    2: '#CDC713',
-    3: '#57158A',
-    4: '#0E9B2D',
-    5: '#7F0C00',
-    6: '#7F7B00',
-    7: '#320455',
-    8: '#CD6E13',
-    9: '#0E6C7E',
-}
-
-
-def migrate_color(cr):
-    for old, new in COLOR_NUMERIC_TO_RVB.iteritems():
-        cr.execute("""
-            UPDATE tile_tile
-            SET color='%s', font_color='#FFFFFF'
-            WHERE color='%s'
-        """ % (new, old))
-
-
-def migrate(cr, installed_version):
-    migrate_color(cr)