fix(xo-server/Xapi#importDeltaVm): remove transferSize in result

Not necessary and broken since bdb0ca836

packages/xo-server/src/api/test.js

@@ -68,10 +68,9 @@ export async function copyVm({ vm, sr }) {
     console.log('export delta VM...')
     const input = await srcXapi.exportDeltaVm(vm)
     console.log('import delta VM...')
-    const { transferSize, vm: copyVm } = await tgtXapi.importDeltaVm(input, {
+    const { vm: copyVm } = await tgtXapi.importDeltaVm(input, {
       srId: sr,
     })
-    console.log('transfered size:', transferSize)
     await tgtXapi.VM_destroy(copyVm.$ref)
   }
 }

packages/xo-server/src/xapi/index.js

@@ -793,7 +793,6 @@ export default class Xapi extends XapiBase {
     })
 
     const { streams } = delta
-    let transferSize = 0
 
     await Promise.all([
       // Import VDI contents.
@@ -802,12 +801,7 @@ export default class Xapi extends XapiBase {
           if (typeof stream === 'function') {
             stream = await stream()
           }
-          const sizeStream = stream.pipe(createSizeStream()).once('finish', () => {
-            transferSize += sizeStream.size
-          })
-          sizeStream.task = stream.task
-          sizeStream.length = stream.length
-          await this._importVdiContent(vdi, sizeStream, VDI_FORMAT_VHD)
+          await this._importVdiContent(vdi, stream, VDI_FORMAT_VHD)
         }
       }),
 
@@ -851,7 +845,7 @@ export default class Xapi extends XapiBase {
       ),
     ])
 
-    return { transferSize, vm }
+    return { vm }
   }
 
   async _migrateVmWithStorageMotion(