Revert (rebased) 9baa80c (not cleaning up)

Author: chronitis

dbt/include/athena/macros/adapters/relation.sql

@@ -1,7 +1,5 @@
 {% macro athena__drop_relation(relation) -%}
-  {% if config.get('incremental_strategy') == 'insert_overwrite' %}
-    {%- do adapter.clean_up_table(relation.schema, relation.table) -%}
-  {% endif %}
+  {%- do adapter.clean_up_table(relation.schema, relation.table) -%}
   {% call statement('drop_relation', auto_begin=False) -%}
     drop {{ relation.type }} if exists {{ relation }}
   {%- endcall %}