remove unwanted marked

Author: cijothomas

opentelemetry-sdk/src/metrics/periodic_reader.rs

@@ -52,7 +52,6 @@ where
     ///
     /// If this option is not used or `interval` is equal to zero, 60 seconds is
     /// used as the default.
-    #[allow(unused)]
     pub fn with_interval(mut self, interval: Duration) -> Self {
         if !interval.is_zero() {
             self.interval = interval;