remove the paragraph about OPENQA_HOSTNAME completely and fix asciidoc

Author: coolo

Diff for: docs/Installing.asciidoc

@@ -357,24 +357,8 @@ KVM doesn't work
 * make sure you are not already running other hypervisors such as VirtualBox
 * when running inside a vm make sure nested virtualization is enabled (pass nested=1 to your kvm module)
 
-Tests try to access openqa via 'localhost' inside qemu which fails
-==================================================================
-
-The workers needs to be configured to connect to the fully qualified domain
-name of your openqa host. You can do that in +/etc/openqa/workers.ini+ by
-setting the +HOST+ variable, e.g:
-
-  HOST = http://www.example.com
-
-
-However, for that to work, you will need some DNS server to resolve the
-domain name you chose to an IP address. Furthermore, the address of that
-DNS server needs to be listed as the first entry in the host's +/etc/resolv.conf+
-file, since it is the one that QEmu will pick up to set up its "user mode
-networking".
-
 openid login times out
-======================
+~~~~~~~~~~~~~~~~~~~~~~
 
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