Remove unused allow_tenant_reuse flag

Change-Id: Ic4884666965dbe22fb55b12e087dd102345686a1
diff --git a/etc/tempest.conf.sample b/etc/tempest.conf.sample
index 251336e..3b40d4b 100644
--- a/etc/tempest.conf.sample
+++ b/etc/tempest.conf.sample
@@ -220,14 +220,6 @@
 # admin credentials are known. (boolean value)
 #allow_tenant_isolation=false
 
-# If allow_tenant_isolation is True and a tenant that would be
-# created for a given test already exists (such as from a
-# previously-failed run), re-use that tenant instead of
-# failing because of the conflict. Note that this would result
-# in the tenant being deleted at the end of a subsequent
-# successful run. (boolean value)
-#allow_tenant_reuse=true
-
 # Valid secondary image reference to be used in tests. (string
 # value)
 #image_ref={$IMAGE_ID}
diff --git a/tempest/config.py b/tempest/config.py
index 6af7d51..e032d8c 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -103,14 +103,6 @@
                      "users. This option enables isolated test cases and "
                      "better parallel execution, but also requires that "
                      "OpenStack Identity API admin credentials are known."),
-    cfg.BoolOpt('allow_tenant_reuse',
-                default=True,
-                help="If allow_tenant_isolation is True and a tenant that "
-                     "would be created for a given test already exists (such "
-                     "as from a previously-failed run), re-use that tenant "
-                     "instead of failing because of the conflict. Note that "
-                     "this would result in the tenant being deleted at the "
-                     "end of a subsequent successful run."),
     cfg.StrOpt('image_ref',
                default="{$IMAGE_ID}",
                help="Valid secondary image reference to be used in tests."),