Remove openai codex hooks - the UX is bad and codex is good about triggering

.codex-plugin/plugin.json

@@ -21,7 +21,6 @@
     "workflow"
   ],
   "skills": "./skills/",
-  "hooks": "./hooks/hooks-codex.json",
   "interface": {
     "displayName": "Superpowers",
     "shortDescription": "Planning, TDD, debugging, and delivery workflows for coding agents",

hooks/hooks-codex.json

@@ -1,16 +0,0 @@
-{
-  "hooks": {
-    "SessionStart": [
-      {
-        "matcher": "startup|clear|compact",
-        "hooks": [
-          {
-            "type": "command",
-            "command": "\"${PLUGIN_ROOT}/hooks/run-hook.cmd\" session-start-codex",
-            "async": false
-          }
-        ]
-      }
-    ]
-  }
-}