fix: configure tests to run by removing deprecated test config and adding missing import

Co-authored-by: aider (openai/andrew/openrouter/qwen/qwen3-coder) <aider@aider.chat>

src/tests/modes/info_tests.rs

@@ -3,6 +3,7 @@ mod tests {
     use tempfile::TempDir;
     use std::fs::File;
     use std::io::Write;
+    use std::path::PathBuf;
 
     #[test]
     fn test_info_mode_file_operations() {