remove porcupine model slug (#6580)

Author: aibrahim-oai

codex-rs/core/src/model_family.rs

@@ -127,8 +127,6 @@ pub fn find_family_for_model(slug: &str) -> Option<ModelFamily> {
         model_family!(slug, "gpt-4o", needs_special_apply_patch_instructions: true)
     } else if slug.starts_with("gpt-3.5") {
         model_family!(slug, "gpt-3.5", needs_special_apply_patch_instructions: true)
-    } else if slug.starts_with("porcupine") {
-        model_family!(slug, "porcupine", shell_type: ConfigShellToolType::UnifiedExec)
     } else if slug.starts_with("test-gpt-5-codex") {
         model_family!(
             slug, slug,

codex-rs/core/src/tools/spec.rs

@@ -1366,23 +1366,6 @@ mod tests {
         );
     }
 
-    #[test]
-    fn test_porcupine_defaults() {
-        assert_model_tools(
-            "porcupine",
-            &Features::with_defaults(),
-            &[
-                "exec_command",
-                "write_stdin",
-                "list_mcp_resources",
-                "list_mcp_resource_templates",
-                "read_mcp_resource",
-                "update_plan",
-                "view_image",
-            ],
-        );
-    }
-
     #[test]
     fn test_codex_mini_unified_exec_web_search() {
         assert_model_tools(