Remove bindep_command lines

Change-Id: Ib2b228a5abf5ce32453c27c5295be93cdbcbf286
diff --git a/playbooks/zuul-stream/pre.yaml b/playbooks/zuul-stream/pre.yaml
index 3f4bdf9..34cabce 100644
--- a/playbooks/zuul-stream/pre.yaml
+++ b/playbooks/zuul-stream/pre.yaml
@@ -4,11 +4,9 @@
     - role: bindep
       bindep_profile: test
       bindep_dir: src/git.openstack.org/openstack-infra/zuul
-      bindep_command: /usr/bindep-env/bin/bindep
 
     - role: bindep
       bindep_dir: src/git.openstack.org/openstack/ara
-      bindep_command: /usr/bindep-env/bin/bindep
 
   post_tasks: