remove unsed import

Author: Cheng-Yuan-Lai

datafusion/functions/src/crypto/basic.rs

@@ -29,8 +29,8 @@ use datafusion_common::cast::as_binary_array;
 
 use arrow::compute::StringArrayType;
 use datafusion_common::{
-    cast::as_generic_binary_array, exec_err, internal_err, plan_err,
-    utils::take_function_args, DataFusionError, Result, ScalarValue,
+    exec_err, internal_err, plan_err, utils::take_function_args, DataFusionError, Result,
+    ScalarValue,
 };
 use datafusion_expr::ColumnarValue;
 use md5::Md5;