Remove unnecessary cfg (#7773)

Author: sarutak

datafusion/core/tests/sql/mod.rs

@@ -74,7 +74,6 @@ macro_rules! test_expression {
 
 pub mod aggregates;
 pub mod arrow_files;
-#[cfg(feature = "avro")]
 pub mod create_drop;
 pub mod csv_files;
 pub mod describe;