remove extra implementation of shutdown methods

Author: mohammadVatandoost

opentelemetry-sdk/benches/log_enabled.rs

@@ -30,10 +30,6 @@ impl LogExporter for NoopExporter {
         Ok(())
     }
 
-    fn shutdown_with_timeout(&self, _timeout: time::Duration) -> OTelSdkResult {
-        Ok(())
-    }
-
     #[inline]
     fn event_enabled(
         &self,

opentelemetry-sdk/src/logs/log_processor.rs

@@ -93,10 +93,6 @@ pub(crate) mod tests {
             Ok(())
         }
 
-        fn shutdown_with_timeout(&self, _timeout: time::Duration) -> OTelSdkResult {
-            Ok(())
-        }
-
         fn set_resource(&mut self, resource: &Resource) {
             self.resource
                 .lock()