fixed yahoo api calls for cleansing low profile data

src/scraper/webdriver.rs

@@ -605,9 +605,6 @@ pub struct ChromeInstance {
 
     instance_id: usize,
     monitoring: Option<crate::monitoring::MonitoringHandle>,
-    
-    // ✅ NEW: Track Chrome browser PID for proper cleanup
-    chrome_pid: Arc<Mutex<Option<u32>>>,
 }
 
 impl ChromeInstance {
@@ -637,7 +634,6 @@ impl ChromeInstance {
 
             instance_id,
             monitoring,
-            chrome_pid: Arc::new(Mutex::new(None)),
         })
     }