docs: revert helm values change for multirm (#9145)

(cherry picked from commit 4d1b8ae)

helm/charts/determined/values.yaml

@@ -351,16 +351,3 @@ resourcePools:
 
 ## Configure the initial user password for the cluster
 # initialUserPassword
-
-# additional_resource_managers:
-#   - resource_manager:
-#       type: kubernetes
-#       max_slots_per_pod: 1
-#       name: carolina-multirm-1
-#       namespace: default
-#       kubeconfig_secret_name: additionalrm
-#       kubeconfig_secret_value: config
-#       determined_master_ip: 10.11.12.13
-#       determined_master_port: 8080
-#     resource_pools:
-#       - pool_name: additional_pool