Remove code owner for nmbs (#135357)

CODEOWNERS

@@ -1024,8 +1024,6 @@ build.json @home-assistant/supervisor
 /homeassistant/components/nina/ @DeerMaximum
 /tests/components/nina/ @DeerMaximum
 /homeassistant/components/nissan_leaf/ @filcole
-/homeassistant/components/nmbs/ @thibmaek
-/tests/components/nmbs/ @thibmaek
 /homeassistant/components/noaa_tides/ @jdelaney72
 /homeassistant/components/nobo_hub/ @echoromeo @oyvindwe
 /tests/components/nobo_hub/ @echoromeo @oyvindwe

homeassistant/components/nmbs/manifest.json

@@ -1,7 +1,7 @@
 {
   "domain": "nmbs",
   "name": "NMBS",
-  "codeowners": ["@thibmaek"],
+  "codeowners": [],
   "config_flow": true,
   "documentation": "https://www.home-assistant.io/integrations/nmbs",
   "iot_class": "cloud_polling",