remove unused code

Author: schauder

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/repository/query/JdbcDeleteQueryCreator.java

@@ -89,8 +89,6 @@ protected List<ParametrizedQuery> complete(@Nullable Criteria criteria, Sort sor
 		Table table = Table.create(entityMetadata.getTableName());
 		MapSqlParameterSource parameterSource = new MapSqlParameterSource();
 
-		SqlContext sqlContext = new SqlContext();
-
 		Condition condition = criteria == null ? null
 				: queryMapper.getMappedObject(parameterSource, criteria, table, entity);