Update ITextReranking

Author: Oceania2018

src/Infrastructure/BotSharp.Abstraction/MLTasks/ITextReranking.cs

@@ -17,14 +17,6 @@ public interface ITextReranking
     /// </summary>
     string Model { get; }
 
-    /// <summary>
-    /// Rerank a single query-document pair and return the relevance score.
-    /// </summary>
-    /// <param name="query">The search query</param>
-    /// <param name="document">The document text to score</param>
-    /// <returns>Relevance score (typically between 0 and 1, higher is more relevant)</returns>
-    Task<float> GetRerankScoreAsync(string query, string document);
-
     /// <summary>
     /// Rerank multiple documents for a given query and return their relevance scores.
     /// </summary>
@@ -33,15 +25,6 @@ public interface ITextReranking
     /// <returns>List of relevance scores in the same order as input documents</returns>
     Task<List<float>> GetRerankScoresAsync(string query, List<string> documents);
 
-    /// <summary>
-    /// Rerank multiple documents and return them sorted by relevance score.
-    /// </summary>
-    /// <param name="query">The search query</param>
-    /// <param name="documents">List of document texts to rerank</param>
-    /// <param name="topK">Number of top results to return (optional, returns all if not specified)</param>
-    /// <returns>List of (document, score) tuples sorted by relevance (highest first)</returns>
-    Task<List<(string Document, float Score)>> RerankDocumentsAsync(string query, List<string> documents, int? topK = null);
-
     /// <summary>
     /// Set the model name to use for reranking.
     /// </summary>