Remove large_ops_number from devstack tempest

Option was deleted from Tempest config file. Also test scenario
was deleted. See commit I93b2fb33e97381f7c1e0cb1ef09ebc5c42c16ecc

Change-Id: I750e50ba7cf8fca1dde391c2620b4a815d6b02a1
Closes-Bug: #1599619
diff --git a/lib/tempest b/lib/tempest
index aa09e9a..bc3a2d8 100644
--- a/lib/tempest
+++ b/lib/tempest
@@ -423,9 +423,6 @@
     iniset $TEMPEST_CONFIG scenario aki_img_file "cirros-${CIRROS_VERSION}-${CIRROS_ARCH}-vmlinuz"
     iniset $TEMPEST_CONFIG scenario img_file "cirros-${CIRROS_VERSION}-${CIRROS_ARCH}-disk.img"
 
-    # Large Ops Number
-    iniset $TEMPEST_CONFIG scenario large_ops_number ${TEMPEST_LARGE_OPS_NUMBER:-0}
-
     # Telemetry
     iniset $TEMPEST_CONFIG telemetry-feature-enabled events "True"