slapos_cloud: Dont use index text_content and sla_xml on full text

    On a large scale, this slow down and flood full text table w/o any practical use.

master/bt5/slapos_cloud/PortalTypeTemplateItem/portal_types/Instance%20Tree.xml

@@ -91,8 +91,6 @@
                 <string>description</string>
                 <string>reference</string>
                 <string>short_title</string>
-                <string>text_content</string>
-                <string>sla_xml</string>
               </tuple>
             </value>
         </item>

master/bt5/slapos_cloud/PortalTypeTemplateItem/portal_types/Slave%20Instance.xml

@@ -89,8 +89,6 @@
                 <string>description</string>
                 <string>reference</string>
                 <string>short_title</string>
-                <string>text_content</string>
-                <string>sla_xml</string>
               </tuple>
             </value>
         </item>

master/bt5/slapos_cloud/PortalTypeTemplateItem/portal_types/Software%20Instance.xml

@@ -87,8 +87,6 @@
                 <string>description</string>
                 <string>reference</string>
                 <string>short_title</string>
-                <string>text_content</string>
-                <string>sla_xml</string>
               </tuple>
             </value>
         </item>