fix: unused import remove

Author: nikhilmantri0902

opentelemetry-proto/src/transform/trace.rs

@@ -18,9 +18,7 @@ pub fn build_span_flags(
 #[cfg(feature = "gen-tonic-messages")]
 pub mod tonic {
     use crate::proto::tonic::resource::v1::Resource;
-    use crate::proto::tonic::trace::v1::{
-        span, status, ResourceSpans, ScopeSpans, Span, Status,
-    };
+    use crate::proto::tonic::trace::v1::{span, status, ResourceSpans, ScopeSpans, Span, Status};
     use crate::transform::common::{
         to_nanos,
         tonic::{Attributes, ResourceAttributesWithSchema},