chore: clean up nightly sims workflows (#24536)

Author: Alex | Interchain Labs

.github/workflows/sims-045.yml

@@ -1,6 +1,9 @@
 name: Sims release/0.50.x
 # Sims workflow runs multiple types of simulations (nondeterminism, import-export, after-import, multi-seed-short)
 # This workflow will run on all Pull Requests, if a .go, .mod or .sum file have been changed
+
+# TODO - update to 53 once we have cut release
+
 on:
   schedule:
     - cron: "0 0,12 * * *"