adding CoalesceBatches

Author: comphead

native/core/src/execution/planner.rs

@@ -70,7 +70,6 @@ use datafusion_physical_expr::aggregate::{AggregateExprBuilder, AggregateFunctio
 
 use crate::execution::shuffle::CompressionCodec;
 use crate::execution::spark_plan::SparkPlan;
-use datafusion::optimizer::OptimizerConfig;
 use datafusion::physical_plan::coalesce_batches::CoalesceBatchesExec;
 use datafusion_comet_proto::{
     spark_expression::{