chore: update cos

Author: jamesbhobbs

CODEOWNERS

@@ -18,24 +18,4 @@
 
 # NOTE: very broad match, putting it first so later more specific directives
 # can overwrite parts of it
-deepnote_toolkit/ @deepnote/gtm
-deepnote_toolkit/chart/ @OlegWock
-deepnote_toolkit/ocelots/ @OlegWock
-
-# Platform Team ownership
-
-.github/actions/* @deepnote/platform
-.github/workflows/* @deepnote/platform
-installer/ @deepnote/platform
-dockerfiles/ @deepnote/platform
-configs/ @deepnote/platform
-bin/ @deepnote/platform
-deepnote_toolkit/set_notebook_path.py @deepnote/platform
-
-# AI Team ownership
-
-deepnote_toolkit/notebook_functions.py @jankuca
-
-# CTO ownership
-
-CODEOWNERS @deepnote/cto @deepnote/platform
+* @deepnote/platform