slapos_pdm: drop unused InstanceTree_getUpgradeSubscriptionRelatedValue

master/bt5/slapos_pdm/SkinTemplateItem/portal_skins/slapos_pdm/InstanceTree_getUpgradeSubscriptionRelatedValue.py

-"""
-  Get a related Upgrade Decision 
-"""
-if simulation_state not in ["confirmed", "started", "stopped"]:
-  raise ValueError(
-    "You shouldn't request for this state: %s" % simulation_state)
-
-
-decision_line_list = context.getAggregateValueList(
-                        portal_type="Upgrade Decision Line", 
-                        simulation_state=simulation_state)
-
-if len(decision_line_list) > 1:
-  raise ValueError("Your have more them one valid decison line!")
- 
-if len(decision_line_list) == 0:
-  return None
-
-return decision_line_list[0].getParentValue()

master/bt5/slapos_pdm/SkinTemplateItem/portal_skins/slapos_pdm/InstanceTree_getUpgradeSubscriptionRelatedValue.xml

-<?xml version="1.0"?>
-<ZopeData>
-  <record id="1" aka="AAAAAAAAAAE=">
-    <pickle>
-      <global name="PythonScript" module="Products.PythonScripts.PythonScript"/>
-    </pickle>
-    <pickle>
-      <dictionary>
-        <item>
-            <key> <string>_bind_names</string> </key>
-            <value>
-              <object>
-                <klass>
-                  <global name="_reconstructor" module="copy_reg"/>
-                </klass>
-                <tuple>
-                  <global name="NameAssignments" module="Shared.DC.Scripts.Bindings"/>
-                  <global name="object" module="__builtin__"/>
-                  <none/>
-                </tuple>
-                <state>
-                  <dictionary>
-                    <item>
-                        <key> <string>_asgns</string> </key>
-                        <value>
-                          <dictionary>
-                            <item>
-                                <key> <string>name_container</string> </key>
-                                <value> <string>container</string> </value>
-                            </item>
-                            <item>
-                                <key> <string>name_context</string> </key>
-                                <value> <string>context</string> </value>
-                            </item>
-                            <item>
-                                <key> <string>name_m_self</string> </key>
-                                <value> <string>script</string> </value>
-                            </item>
-                            <item>
-                                <key> <string>name_subpath</string> </key>
-                                <value> <string>traverse_subpath</string> </value>
-                            </item>
-                          </dictionary>
-                        </value>
-                    </item>
-                  </dictionary>
-                </state>
-              </object>
-            </value>
-        </item>
-        <item>
-            <key> <string>_params</string> </key>
-            <value> <string>simulation_state=\'confirmed\'</string> </value>
-        </item>
-        <item>
-            <key> <string>id</string> </key>
-            <value> <string>InstanceTree_getUpgradeSubscriptionRelatedValue</string> </value>
-        </item>
-      </dictionary>
-    </pickle>
-  </record>
-</ZopeData>