[regression-test](variant) remove nonexist session var `sort_phase_nu…

…m` in test

regression-test/suites/variant_p0/load.groovy

@@ -290,7 +290,7 @@ suite("regression_test_variant", "p0"){
         sql """insert into ${table_name} values (5, '{"i" : 1}'), (1, '{"a" : 1}')"""
         sql """insert into ${table_name} values (6, '{"j" : 1}'), (1, '{"a" : 1}')"""
         sql """insert into ${table_name} values (6, '{"k" : 1}'), (1, '{"a" : 1}')"""
-        sql "select /*+SET_VAR(batch_size=4064,broker_load_batch_size=16352,disable_streaming_preaggregations=false,enable_distinct_streaming_aggregation=true,parallel_fragment_exec_instance_num=1,parallel_pipeline_task_num=4,profile_level=1,enable_pipeline_engine=true,enable_parallel_scan=true,parallel_scan_max_scanners_count=16,parallel_scan_min_rows_per_scanner=128,enable_fold_constant_by_be=true,enable_rewrite_element_at_to_slot=true,runtime_filter_type=2,enable_parallel_result_sink=false,sort_phase_num=0,enable_nereids_planner=true,rewrite_or_to_in_predicate_threshold=2,enable_function_pushdown=true,enable_common_expr_pushdown=true,enable_local_exchange=true,partitioned_hash_join_rows_threshold=1048576,partitioned_hash_agg_rows_threshold=8,partition_pruning_expand_threshold=10,enable_share_hash_table_for_broadcast_join=true,enable_two_phase_read_opt=true,enable_common_expr_pushdown_for_inverted_index=false,enable_delete_sub_predicate_v2=true,min_revocable_mem=33554432,fetch_remote_schema_timeout_seconds=120,max_fetch_remote_schema_tablet_count=512,enable_join_spill=false,enable_sort_spill=false,enable_agg_spill=false,enable_force_spill=false,data_queue_max_blocks=1,spill_streaming_agg_mem_limit=268435456,external_agg_partition_bits=5) */ * from ${table_name}"
+        sql "select /*+SET_VAR(batch_size=4064,broker_load_batch_size=16352,disable_streaming_preaggregations=false,enable_distinct_streaming_aggregation=true,parallel_fragment_exec_instance_num=1,parallel_pipeline_task_num=4,profile_level=1,enable_pipeline_engine=true,enable_parallel_scan=true,parallel_scan_max_scanners_count=16,parallel_scan_min_rows_per_scanner=128,enable_fold_constant_by_be=true,enable_rewrite_element_at_to_slot=true,runtime_filter_type=2,enable_parallel_result_sink=false,enable_nereids_planner=true,rewrite_or_to_in_predicate_threshold=2,enable_function_pushdown=true,enable_common_expr_pushdown=true,enable_local_exchange=true,partitioned_hash_join_rows_threshold=1048576,partitioned_hash_agg_rows_threshold=8,partition_pruning_expand_threshold=10,enable_share_hash_table_for_broadcast_join=true,enable_two_phase_read_opt=true,enable_common_expr_pushdown_for_inverted_index=false,enable_delete_sub_predicate_v2=true,min_revocable_mem=33554432,fetch_remote_schema_timeout_seconds=120,max_fetch_remote_schema_tablet_count=512,enable_join_spill=false,enable_sort_spill=false,enable_agg_spill=false,enable_force_spill=false,data_queue_max_blocks=1,spill_streaming_agg_mem_limit=268435456,external_agg_partition_bits=5) */ * from ${table_name}"
         qt_sql_36_1 "select cast(v['a'] as int), cast(v['b'] as int), cast(v['c'] as int) from ${table_name} order by k limit 10"
         sql "DELETE FROM ${table_name} WHERE k=1"
         sql "select * from ${table_name}"