(POOLER-70) Remove get_vm_host_info from pool_manager

Previously the Pool Manager would use vSphere objects directly.  This commit
removes get_vm_host_info as this functionality is now in the vSphere VM
Provider.

lib/vmpooler/pool_manager.rb

@@ -498,11 +498,6 @@ module Vmpooler
       end
     end
 
-    def get_vm_host_info(vm_object)
-      parent_host = vm_object.summary.runtime.host
-      [parent_host, parent_host.name]
-    end
-
     def remove_vmpooler_migration_vm(pool, vm)
       begin
         $redis.srem('vmpooler__migration', vm)

spec/unit/pool_manager_spec.rb

@@ -1667,22 +1667,6 @@ EOT
     end
   end
 
-  describe "#get_vm_host_info" do
-    before do
-      expect(subject).not_to be_nil
-    end
-
-    let(:vm_object) { double('vm_object') }
-    let(:parent_host) { double('parent_host') }
-
-    it 'should return an array with host information' do
-      expect(vm_object).to receive_message_chain(:summary, :runtime, :host).and_return(parent_host)
-      expect(parent_host).to receive(:name).and_return('vmhostname')
-
-      expect(subject.get_vm_host_info(vm_object)).to eq([parent_host,'vmhostname'])
-    end
-  end
-
   describe "#execute!" do
     let(:threads) {{}}