Remove input-scenario config options

input scenarios functionality has already been removed
from tempest and corresponding config options also been
deprecated and schedule to remove in Ocata-
 Ie7814bd50f1c57c5f8da8355f665f09c9ac8e2d9

This commit removes the deprecated input-scenario config options.

Change-Id: Idd4050994d007715a19179f11b745ba27745ca8e
diff --git a/releasenotes/notes/remove-deprecated-input-scenario-config-options-414e0c5442e967e9.yaml b/releasenotes/notes/remove-deprecated-input-scenario-config-options-414e0c5442e967e9.yaml
new file mode 100644
index 0000000..371c061
--- /dev/null
+++ b/releasenotes/notes/remove-deprecated-input-scenario-config-options-414e0c5442e967e9.yaml
@@ -0,0 +1,6 @@
+---
+upgrade:
+  - The deprecated input-scenario config options and group
+    have been removed.
+    The input scenarios functionality already being removed from tempest
+    and from this release, their corresponding config options too.