Remove ipdb installation in tox debug section

The lastest ipdb depends on ipython 6.0, but ipython 6.0
only can be installed in python 3.3 and above, see
http://paste.openstack.org/show/607632/ . If we try to
run "tox -e debug" in python2.7, the install error is raised
and block the function. Remove the ipdb installation, it's
not necessary, we can use pdb to replace.

Change-Id: Ib47bb5925b7a5b1d3a319b58fa219c1b57dccb93

1 files changed, 0 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index d3cafae5..ac5c6593 100644
--- a/tox.ini
+++ b/tox.ini
@@ -75,7 +75,6 @@ commands =
 [testenv:debug]
 passenv = OS_*
 commands =
-    pip install -q -U ipdb
     oslo_debug_helper -t openstackclient/tests {posargs}
 
 [testenv:docs]