Remove legacy ModelInfo and merge it with ModelFamily (#7748)

This is a step towards removing the need to know `model` when
constructing config. We firstly don't need to know `model_info` and just
respect if the user has already set it. Next step, we don't need to know
`model` unless the user explicitly set it in `config.toml`

codex-rs/core/src/client.rs

@@ -48,7 +48,6 @@ use crate::error::Result;
 use crate::flags::CODEX_RS_SSE_FIXTURE;
 use crate::model_provider_info::ModelProviderInfo;
 use crate::model_provider_info::WireApi;
-use crate::openai_model_info::get_model_info;
 use crate::openai_models::model_family::ModelFamily;
 use crate::tools::spec::create_tools_json_for_chat_completions_api;
 use crate::tools::spec::create_tools_json_for_responses_api;
@@ -95,19 +94,11 @@ impl ModelClient {
     pub fn get_model_context_window(&self) -> Option<i64> {
         let model_family = self.get_model_family();
         let effective_context_window_percent = model_family.effective_context_window_percent;
-        self.config
-            .model_context_window
-            .or_else(|| get_model_info(&model_family).map(|info| info.context_window))
+        model_family
+            .context_window
             .map(|w| w.saturating_mul(effective_context_window_percent) / 100)
     }
 
-    pub fn get_auto_compact_token_limit(&self) -> Option<i64> {
-        let model_family = self.get_model_family();
-        self.config.model_auto_compact_token_limit.or_else(|| {
-            get_model_info(&model_family).and_then(|info| info.auto_compact_token_limit)
-        })
-    }
-
     pub fn config(&self) -> Arc<Config> {
         Arc::clone(&self.config)
     }