Remove server from physical storage summary test

Setting physical servers on physical storage will not work since those
two entities are connected through canisters.

This commit simply removes redundant parts of the spec that in no way
affect the textual summary that this spec is testing.

spec/helpers/physical_storage_helper/textual_summary_spec.rb

@@ -24,24 +24,6 @@
                        :description      => 'S2200 used to test dh-storage-irm')
   end
 
-  let(:network) do
-    FactoryGirl.build(:network, :ipaddress => '10.243.5.64')
-  end
-
-  let(:guest_device) do
-    FactoryGirl.build(:guest_device,
-                      :device_type => 'management',
-                      :network     => network)
-  end
-
-  let(:hardware) do
-    FactoryGirl.build(:hardware, :guest_devices => [guest_device])
-  end
-
-  let(:computer_system) do
-    FactoryGirl.build(:computer_system, :hardware => hardware)
-  end
-
   let(:physical_rack) do
     FactoryGirl.create(:physical_rack, :name => 'Rack XYZ')
   end
@@ -58,7 +40,6 @@
                        :enclosures           => 1,
                        :canister_slots       => 2,
                        :asset_detail         => asset_detail,
-                       :computer_system      => computer_system,
                        :physical_rack        => physical_rack)
   end