Nuke XML support from Nova REST API - Phase 1

In I5a580fc323c3809790b4a68a9f8f8129ecdc2cf0 we switched off XML support. In
this review we entirely remove all the testcases and supporting files.

Change-Id: I83827d438753fd3899053dd6e09bc77c997c7406

doc/api_samples/os-console-output/console-output-post-req.xml

@@ -1,2 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<os-getConsoleOutput length="50" />

doc/api_samples/os-console-output/console-output-post-resp.xml

@@ -1,4 +0,0 @@
-<?xml version='1.0' encoding='UTF-8'?>
-<output>FAKE CONSOLE OUTPUT
-ANOTHER
-LAST LINE</output>

doc/api_samples/os-console-output/server-post-req.xml

@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<server xmlns="http://docs.openstack.org/compute/api/v1.1" imageRef="http://openstack.example.com/openstack/images/70a599e0-31e7-49b7-b260-868f441e862b" flavorRef="http://openstack.example.com/openstack/flavors/1" name="new-server-test">
-  <metadata>
-    <meta key="My Server Name">Apache1</meta>
-  </metadata>
-  <personality>
-    <file path="/etc/banner.txt">
-        ICAgICAgDQoiQSBjbG91ZCBkb2VzIG5vdCBrbm93IHdoeSBp
-        dCBtb3ZlcyBpbiBqdXN0IHN1Y2ggYSBkaXJlY3Rpb24gYW5k
-        IGF0IHN1Y2ggYSBzcGVlZC4uLkl0IGZlZWxzIGFuIGltcHVs
-        c2lvbi4uLnRoaXMgaXMgdGhlIHBsYWNlIHRvIGdvIG5vdy4g
-        QnV0IHRoZSBza3kga25vd3MgdGhlIHJlYXNvbnMgYW5kIHRo
-        ZSBwYXR0ZXJucyBiZWhpbmQgYWxsIGNsb3VkcywgYW5kIHlv
-        dSB3aWxsIGtub3csIHRvbywgd2hlbiB5b3UgbGlmdCB5b3Vy
-        c2VsZiBoaWdoIGVub3VnaCB0byBzZWUgYmV5b25kIGhvcml6
-        b25zLiINCg0KLVJpY2hhcmQgQmFjaA==
-    </file>
-  </personality>
-</server>

doc/api_samples/os-console-output/server-post-resp.xml

@@ -1,6 +0,0 @@
-<?xml version='1.0' encoding='UTF-8'?>
-<server xmlns:atom="http://www.w3.org/2005/Atom" xmlns="http://docs.openstack.org/compute/api/v1.1" id="71f1047f-f5db-42f9-b43f-85767bcafda6" adminPass="XVCtnj5P2MnJ">
-  <metadata/>
-  <atom:link href="http://openstack.example.com/v2/openstack/servers/71f1047f-f5db-42f9-b43f-85767bcafda6" rel="self"/>
-  <atom:link href="http://openstack.example.com/openstack/servers/71f1047f-f5db-42f9-b43f-85767bcafda6" rel="bookmark"/>
-</server>