config: remove unused telemetry stanza (#6137)

I think this was somehow accidentally included from Vault
back in the day and never removed. As far as I can tell
these options have absolutely no effect on anything
in Boundary and will probably only cause confusion.

enos/modules/docker_worker/worker-config-bsr-downstream.hcl

@@ -3,11 +3,6 @@
 
 disable_mlock = true
 
-telemetry {
-  prometheus_retention_time = "24h"
-  disable_hostname          = true
-}
-
 listener "tcp" {
   address     = "0.0.0.0:${port}"
   purpose     = "proxy"

enos/modules/docker_worker/worker-config-bsr.hcl

@@ -3,11 +3,6 @@
 
 disable_mlock = true
 
-telemetry {
-  prometheus_retention_time = "24h"
-  disable_hostname          = true
-}
-
 listener "tcp" {
   address     = "0.0.0.0:${port}"
   purpose     = "proxy"

enos/modules/docker_worker/worker-config-controller-led.hcl

@@ -3,11 +3,6 @@
 
 disable_mlock = true
 
-telemetry {
-  prometheus_retention_time = "24h"
-  disable_hostname          = true
-}
-
 listener "tcp" {
   address     = "0.0.0.0:${port}"
   purpose     = "proxy"

enos/modules/docker_worker/worker-config-downstream.hcl

@@ -3,11 +3,6 @@
 
 disable_mlock = true
 
-telemetry {
-  prometheus_retention_time = "24h"
-  disable_hostname          = true
-}
-
 listener "tcp" {
   address     = "0.0.0.0:${port}"
   purpose     = "proxy"

enos/modules/docker_worker/worker-config-worker-led.hcl

@@ -3,11 +3,6 @@
 
 disable_mlock = true
 
-telemetry {
-  prometheus_retention_time = "24h"
-  disable_hostname          = true
-}
-
 listener "tcp" {
   address     = "0.0.0.0:${port}"
   purpose     = "proxy"

enos/modules/docker_worker/worker-config.hcl

@@ -3,11 +3,6 @@
 
 disable_mlock = true
 
-telemetry {
-  prometheus_retention_time = "24h"
-  disable_hostname          = true
-}
-
 listener "tcp" {
   address     = "0.0.0.0:${port}"
   purpose     = "proxy"