diff --git a/htdocs/install/mysql/tables/llx_element_rang.key.sql b/htdocs/install/mysql/tables/llx_element_rang.key.sql
deleted file mode 100644
index 8f8d8b2a09e..00000000000
--- a/htdocs/install/mysql/tables/llx_element_rang.key.sql
+++ /dev/null
@@ -1,28 +0,0 @@
--- ============================================================================
--- Copyright (C) 2010 Regis Houssin  <regis@dolibarr.fr>
---
--- This program is free software; you can redistribute it and/or modify
--- it under the terms of the GNU General Public License as published by
--- the Free Software Foundation; either version 2 of the License, or
--- (at your option) any later version.
---
--- This program is distributed in the hope that it will be useful,
--- but WITHOUT ANY WARRANTY; without even the implied warranty of
--- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--- GNU General Public License for more details.
---
--- You should have received a copy of the GNU General Public License
--- along with this program; if not, write to the Free Software
--- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
---
--- $Id$
--- ============================================================================
-
-
-ALTER TABLE llx_element_rang ADD UNIQUE INDEX idx_element_rang_idx1 (fk_parent, parenttype, fk_child, childtype);
-
-	
-ALTER TABLE llx_element_rang ADD INDEX idx_element_rang_fk_parent (fk_parent);
-
--- Pas de contraite sur fk_parent et fk_child car pointe sur differentes tables
-	
\ No newline at end of file
diff --git a/htdocs/install/mysql/tables/llx_element_rang.sql b/htdocs/install/mysql/tables/llx_element_rang.sql
deleted file mode 100644
index c0eda58db88..00000000000
--- a/htdocs/install/mysql/tables/llx_element_rang.sql
+++ /dev/null
@@ -1,30 +0,0 @@
--- ============================================================================
--- Copyright (C) 2010 Regis Houssin  <regis@dolibarr.fr>
---
--- This program is free software; you can redistribute it and/or modify
--- it under the terms of the GNU General Public License as published by
--- the Free Software Foundation; either version 2 of the License, or
--- (at your option) any later version.
---
--- This program is distributed in the hope that it will be useful,
--- but WITHOUT ANY WARRANTY; without even the implied warranty of
--- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--- GNU General Public License for more details.
---
--- You should have received a copy of the GNU General Public License
--- along with this program; if not, write to the Free Software
--- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
---
--- $Id$
-
-
-create table llx_element_rang
-(
-  rowid           	integer AUTO_INCREMENT PRIMARY KEY,  
-  fk_parent			integer NOT NULL,
-  parenttype		varchar(16) NOT NULL,
-  fk_child			integer NOT NULL,
-  childtype			varchar(16) NOT NULL,
-  rang				integer	DEFAULT 0
-) ENGINE=innodb;
-