/usr/share/gforge/db/20050224-1-drop.sql is in gforge-db-postgresql 5.3.2+20141104-3+deb8u3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | DROP INDEX docdata_groupid;
DROP INDEX forumperm_useridgroupforumid;
ALTER TABLE forum_perm DROP CONSTRAINT forum_perm_id_key;
DROP INDEX forumperm_groupforumiduserid;
DROP INDEX group_cvs_history_id_key;
ALTER TABLE project_perm DROP CONSTRAINT project_perm_id_key;
DROP INDEX projecttaskartifact_projecttask;
DROP INDEX supported_langu_language_id_key;
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