[FIX] purchase: remove reference to removed page

Was removed at 8eb05cffe8

Fixes #280

purchase/purchases/rfq/analyze.rst

@@ -37,8 +37,7 @@ Issue some purchase orders
 
 Of course, in order to analyze your vendors' performance, you need to
 issue some **Request For Quotations** (RfQ) and confirm some **Purchase
-Orders**. If you want to know how to generate a purchase order, please
-read the documentation :doc:`../../overview/process/from_po_to_invoice`.
+Orders**.
 
 Analyzing your vendors
 ======================
@@ -98,6 +97,3 @@ powerful.
     on **Favorites** from the **Advanced search view** and 
     then on **Save current search**. The saved filter will 
     then be accessible from the **Favorites** menu.
-
-.. seealso::
-    * :doc:`../../overview/process/from_po_to_invoice`

purchase/purchases/rfq/cancel.rst

@@ -21,11 +21,6 @@ Quotation (RFQ)** from the menu
 :menuselection:`Purchases --> Purchase --> Requests for quotation`. 
 Confirm your RFQ to have a confirmed purchase order
 
-.. note:: 
-    To learn more about the purchase order process, 
-    read the documentation page 
-    :doc:`../../overview/process/from_po_to_invoice`
-
 Cancel your Purchase Order
 ==========================
 

purchase/purchases/rfq/create.rst

@@ -9,9 +9,6 @@ products to your supplier. Once your supplier has answered your request,
 you can choose to go ahead with the offer and purchase or to turn down
 the offer.
 
-For more information on best uses, please read the chapter 
-:doc:`../../overview/process/difference`
-
 Configuration
 =============
 
@@ -70,7 +67,3 @@ right corner of the order will show 1 Shipment and 0 Invoice.
 
 .. image:: ./media/image10.png
 	:align: center
-
-.. seealso:: 
-
-	:doc:`../../overview/process/from_po_to_invoice`

purchase/purchases/rfq/reception.rst

@@ -63,10 +63,6 @@ will probably include the **Vendor Reference** of his sale order).
 .. image:: media/reception03.png
     :align: center
 
-.. note:: 
-    See the documentation page :doc:`../../overview/process/from_po_to_invoice` 
-    for a full overview of the purchase process.
-
 Receive Products
 ----------------