[system-administrators-guide] Removing NetworkManager chapter (now covered by Networking Guide) Removing its link from the Preface

[stephenw]

commit 204a5a9846f2b00d01bf7001be5b2a498abbdbbb
Author: Stephen Wadeley <swadeley at redhat.com>
Date:   Mon Feb 10 23:52:48 2014 +0100

    Removing NetworkManager chapter (now covered by Networking Guide)
    Removing its link from the Preface

 en-US/NetworkManager.xml | 1733 ----------------------------------------------
 en-US/Preface.xml        |    3 -
 2 files changed, 0 insertions(+), 1736 deletions(-)
---
diff --git a/en-US/Preface.xml b/en-US/Preface.xml
index 5a14469..40d095b 100644
--- a/en-US/Preface.xml
+++ b/en-US/Preface.xml
@@ -87,9 +87,6 @@
             This part describes how to configure the network on &MAJOROS;.
           </para>
           <para>
-            <xref linkend="ch-NetworkManager" /> focuses on <application>NetworkManager</application>, a dynamic network control and configuration system that attempts to keep network devices and connections up and active when they are available. Read this chapter for information how to run the <systemitem class="service">NetworkManager</systemitem> daemon, and how to interact with it using the corresponding applet for the notification area.
-          </para>
-          <para>
             <xref linkend="ch-Network_Interfaces" /> explores various interface configuration files, interface control scripts, and network function files located in the <filename class="directory">/etc/sysconfig/network-scripts/</filename> directory. Read this chapter for information how to use these files to configure network interfaces.
           </para>
         </listitem>