mjo/clan/vinberg_clan.py: eliminate top-level QQ import

diff --git a/mjo/clan/vinberg_clan.py b/mjo/clan/vinberg_clan.py
index 958cd96082d6321732e3a01c632e6d45b5a4934d..0650535f879f101799b65eddf2b3984319eaa973 100644 (file)
--- a/mjo/clan/vinberg_clan.py
+++ b/mjo/clan/vinberg_clan.py
@@ -1,4 +1,3 @@
-from sage.rings.rational_field import QQ
 from mjo.clan.normal_decomposition import NormalDecomposition
 
 class VinbergClan(NormalDecomposition):