Feature-flag azure import

Signed-off-by: Jannik Steinmann <jannik.steinmann@datadoghq.com>

Author: DerGut

crates/iceberg/src/io/storage.rs

@@ -27,8 +27,10 @@ use opendal::services::OssConfig;
 #[cfg(feature = "storage-s3")]
 use opendal::services::S3Config;
 use opendal::{Operator, Scheme};
+#[cfg(feature = "storage-azdls")]
+use suprt::AzureStorageScheme;
 
-use super::{AzureStorageScheme, FileIOBuilder};
+use super::FileIOBuilder;
 use crate::{Error, ErrorKind};
 
 /// The storage carries all supported storage services in iceberg