fix : lasts warnings at compile.

src/services/nominatim_client_tests.rs

···
     use anyhow::Result;
     use std::time::Instant;
 
-    /// Mock Redis pool for testing
-    #[derive(Debug, Clone)]
-    struct MockRedisPool;
-
     /// Test configuration
     const TEST_NOMINATIM_URL: &str = "http://nominatim-quebec:8080";
     const TEST_REDIS_URL: &str = "redis://localhost:6379/15"; // Use test database

src/services/venues/venue_cache.rs

···
 use thiserror::Error;
 
 use crate::atproto::lexicon::community_lexicon_location::{Address, Geo};
-use crate::services::nominatim_client::{VenueMetadata, BilingualNames};
+use crate::services::nominatim_client::VenueMetadata;
 use super::venue_types::{VenueDetails, VenueCategory};
 
 /// Cache TTL constants

src/services/venues/venue_search.rs

···
 mod tests {
     use super::*;
 
-    // Mock setup for testing
-    fn create_test_service() -> Result<VenueSearchService> {
-        // Create a mock service for unit testing
-        // In a real implementation, this would use proper mocks
-        // For now, we'll test the validation logic directly
-        Err(anyhow::anyhow!("Mock service not implemented - use integration tests"))
-    }
-
     #[tokio::test]
     async fn test_search_venues_validation() {
         // Test search request validation logic directly