Consolidate "Servers" teams into a single "☁️ IT Servers" team (#38851)

This pull request removes the configuration and team settings for the
"Servers (canary)" group and updates the display name for the main
servers team. The most significant changes are the deletion of the
`servers-canary` agent options and team configuration, and a minor
update to the `servers` team name.

Removed configuration for "Servers (canary)":

* Deleted the `servers-canary.agent-options.yml` file, which contained
agent configuration and update channel settings for canary servers.
* Removed the `servers-canary.yml` team configuration, including team
settings, secrets, agent options, controls, and policy/query/software
placeholders.

Updated team naming:

* Changed the display name in `servers.yml` from "☁️ Servers" to "☁️ IT
Servers" for clarity.

it-and-security/lib/all/agent-options/servers-canary.agent-options.yml

@@ -1,18 +0,0 @@
-config:
-  decorators:
-    load:
-      - SELECT uuid AS host_uuid FROM system_info;
-      - SELECT hostname AS hostname FROM system_info;
-  options:
-    disable_distributed: false
-    distributed_interval: 10
-    distributed_plugin: tls
-    distributed_tls_max_attempts: 3
-    logger_tls_endpoint: /api/osquery/log
-    logger_tls_period: 10
-    pack_delimiter: /
-update_channels:
-  # We want to use these hosts to smoke test edge releases.
-  osqueryd: edge
-  orbit: edge
-  desktop: edge

it-and-security/teams/servers-canary.yml

@@ -1,32 +0,0 @@
-name: "☁️🐣 Servers (canary)"
-team_settings:
-  features:
-    enable_host_users: true
-    enable_software_inventory: true
-  host_expiry_settings:
-    host_expiry_enabled: true
-    host_expiry_window: 30
-  secrets:
-    - secret: $DOGFOOD_SERVERS_CANARY_ENROLL_SECRET
-agent_options:
-  path: ../lib/all/agent-options/servers-canary.agent-options.yml
-controls:
-  enable_disk_encryption: false
-  macos_settings:
-    custom_settings:
-  macos_setup:
-    bootstrap_package: null
-    enable_end_user_authentication: false
-    macos_setup_assistant: null
-  macos_updates:
-    deadline: null
-    minimum_version: null
-  windows_settings:
-    custom_settings: null
-  windows_updates:
-    deadline_days: null
-    grace_period_days: null
-  scripts:
-policies:
-queries:
-software:

it-and-security/teams/servers.yml

@@ -1,4 +1,4 @@
-name: "☁️ Servers"
+name: "☁️ IT Servers"
 team_settings:
   features:
     enable_host_users: true