Revert "Install g-r version of OSC in configure_tempest"

This reverts commit 1fa82aab6634bf815d162978e33b211e1fdef343.

Change-Id: I931756e6d534839a6c9fb3cc6f5dc32c9a1e6436
diff --git a/lib/tempest b/lib/tempest
index 6eeab4e..498a0c7 100644
--- a/lib/tempest
+++ b/lib/tempest
@@ -119,10 +119,6 @@
         pip_install_gr testrepository
     fi
 
-    # Used during configuration so make sure we have the correct
-    # version installed
-    pip_install_gr python-openstackclient
-
     local image_lines
     local images
     local num_images