Remove unused protobuf libs/headers

Tools/WinML-Dashbaord/public/requirements-win32.txt

@@ -1 +1 @@
-https://github.com/tiagoshibata/coremltools_windows/releases/download/v2.0b1/coremltools-2.0b1-py3-none-win_amd64.whl
+https://github.com/tiagoshibata/coremltools_windows/releases/download/v2.0b1/coremltools-2.0b1-cp36-cp36m-win_amd64.whl

Tools/WinML-Dashbaord/src/python/python.tsx

@@ -106,21 +106,6 @@ export async function downloadPython() {
     });
 }
 
-export async function downloadProtobuf() {
-    if (process.platform !== 'win32') {
-        throw Error('Unsupported platform');
-    }
-    return new Promise(async (resolve, reject) => {
-        try {
-            const data = await downloadBinaryFile('https://f001.backblazeb2.com/file/ticast/protobuf.zip') as Buffer;
-            await unzip(data, winmlDataFolder);
-        } catch (err) {
-            return reject(err);
-        }
-        resolve();
-    });
-}
-
 export async function downloadPip(listener?: IOutputListener) {
     // Python embedded distribution for Windows doesn't have pip
     return new Promise(async (resolve, reject) => {
@@ -129,7 +114,6 @@ export async function downloadPip(listener?: IOutputListener) {
             const data = await downloadBinaryFile('https://bootstrap.pypa.io/get-pip.py') as Buffer;
             fs.writeFileSync(installer, data);
             await python([installer], {}, listener);
-            await pip(['install', '-U', 'pip'], listener);
         } catch (err) {
             return reject(err);
         }

Tools/WinML-Dashbaord/src/view/convert/View.tsx

@@ -8,7 +8,7 @@ import * as React from 'react';
 
 import { showOpenDialog, showSaveDialog } from '../../native';
 import { packagedFile, winmlDataFolder } from '../../persistence/appData';
-import { downloadPip, downloadProtobuf, downloadPython, getLocalPython, getPythonBinaries, installVenv, pip, python } from '../../python/python';
+import { downloadPip, downloadPython, getLocalPython, getPythonBinaries, installVenv, pip, python } from '../../python/python';
 
 import './View.css';
 
@@ -16,7 +16,6 @@ enum Step {
     Idle,
     Downloading,
     GetPip,
-    GetProtobuf,
     CreatingVenv,
     InstallingRequirements,
     Converting,
@@ -66,8 +65,6 @@ export default class ConvertView extends React.Component<{}, IComponentState> {
                 return <Spinner label="Downloading Python..." />;
             case Step.GetPip:
                 return <Spinner label="Getting pip in embedded Python..." />;
-            case Step.GetProtobuf:
-                return <Spinner label="Getting protobuf..." />;
             case Step.CreatingVenv:
                 return <Spinner label="Creating virtual environment..." />;
             case Step.InstallingRequirements:
@@ -92,8 +89,6 @@ export default class ConvertView extends React.Component<{}, IComponentState> {
                     await downloadPython();
                     this.setState({ currentStep: Step.GetPip });
                     await downloadPip(this.outputListener);
-                    this.setState({ currentStep: Step.GetProtobuf });
-                    await downloadProtobuf();
                 } else {
                     this.setState({ currentStep: Step.CreatingVenv });
                     await installVenv(option.key);
@@ -147,7 +142,7 @@ export default class ConvertView extends React.Component<{}, IComponentState> {
         };
         showOpenDialog(openDialogOptions)
             .then((filePaths) => {
-                if (filePaths[0]) {
+                if (filePaths) {
                     this.setSource(filePaths[0]);
                 }
             });