删除无调用方的旧图片生成封装

移除 create_openai_image_generation 及其未再用到的导入

server-rs/crates/api-server/src/openai_image_generation.rs

@@ -4,8 +4,8 @@ use platform_image::{
     NANOBANANA_2_MODEL, PlatformImageError, PlatformImageStatusHint, ReferenceImage,
     VECTOR_ENGINE_PROVIDER, build_image_http_client, create_image_edit,
     create_image_edit_with_references, create_image_edit_with_references_and_model,
-    create_image_generation, create_image_generation_with_model,
-    create_nanobanana_generate_content, missing_reference_images_error,
+    create_image_generation_with_model, create_nanobanana_generate_content,
+    missing_reference_images_error,
 };
 #[cfg(test)]
 use platform_image::{build_image_request_body, images_edit_url, images_generation_url};
@@ -129,48 +129,6 @@ pub(crate) fn build_openai_image_http_client(
     build_image_http_client(&settings.provider_settings()).map_err(map_platform_image_error)
 }
 
-pub(crate) async fn create_openai_image_generation(
-    _http_client: &reqwest::Client,
-    settings: &OpenAiImageSettings,
-    prompt: &str,
-    negative_prompt: Option<&str>,
-    size: &str,
-    candidate_count: u32,
-    reference_images: &[String],
-    failure_context: &str,
-) -> Result<OpenAiGeneratedImages, AppError> {
-    let started_at_micros = current_utc_micros();
-    let request_payload = json!({
-        "size": size,
-        "candidateCount": candidate_count,
-        "promptChars": prompt.chars().count(),
-        "negativePromptChars": negative_prompt.map(str::chars).map(Iterator::count),
-        "referenceImageCount": reference_images.len(),
-    });
-    let provider_client = settings.client_for_model(GPT_IMAGE_2_5_GENERATION_MODEL);
-    let provider_settings = settings.provider_settings_for_model(GPT_IMAGE_2_5_GENERATION_MODEL);
-    let result = create_image_generation(
-        provider_client.http_client(),
-        &provider_settings,
-        prompt,
-        negative_prompt,
-        size,
-        candidate_count,
-        reference_images,
-        failure_context,
-    )
-    .await;
-    map_platform_image_result(
-        settings,
-        result,
-        "image_generation",
-        failure_context,
-        request_payload,
-        started_at_micros,
-    )
-    .await
-}
-
 #[allow(clippy::too_many_arguments)]
 pub(crate) async fn create_openai_image_generation_with_model(
     _http_client: &reqwest::Client,