Remove mention to 32bits

source/administrator/xivo/installation/installsystem.rst

@@ -37,7 +37,7 @@ Otherwise GPG key of XiVO repository will not be installed and must be added man
 Installing from a minimal Debian installation
 =============================================
 
-XiVO can be installed directly over a **32-bit** or a **64-bit** Debian jessie. When doing so, you are strongly
+XiVO can be installed directly over a **64-bit** Debian jessie. When doing so, you are strongly
 advised to start with a clean and minimal installation of Debian jessie.
 
 The latest installation image for Debian jessie can be found at https://www.debian.org/releases/jessie/debian-installer.
@@ -48,7 +48,7 @@ Requirements
 
 The installed Debian must:
 
-* use the architecture ``i386`` or ``amd64``
+* use the architecture ``amd64``
 * have a default locale with charset UTF-8
 
 In case you want to migrate a XiVO from ``i386`` to ``amd64``, see :ref:`migrate_i386_to_amd64`.