Remove old files that are not needed any longer

[cleemullins]

These files are no longer used by the build system, having been replaced with cross-platform Powershell scripts. With this, I will no longer get cranky emails on each build that say:

The page build completed successfully, but returned the following warning for the master branch:

It looks like you're using GitHub Pages to distribute binary files. We strongly suggest that you use releases to ship projects on GitHub. Releases are GitHub's way of packaging and providing software to your users. You can think of it as a replacement to using downloads to provide software. We found the following file(s) which may be a good candidate for releases: nuget/rep.exe.

[BruceHaley]

OK

[coveralls]

Pull Request Test Coverage Report for Build 59941

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 66.014%

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Totals
Change from base Build 59827:	0.0%
Covered Lines:	4009
Relevant Lines:	6073

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💛 - Coveralls

[fuselabs]

✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.dll

✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.AI.Luis.dll

✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.AI.QnA.dll

✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.ApplicationInsights.dll

✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.Azure.dll

✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.Dialogs.dll

✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.TemplateManager.dll

✔️ No Binary Compatibility issues for Microsoft.Bot.Configuration.dll

✔️ No Binary Compatibility issues for Microsoft.Bot.Connector.dll

✔️ No Binary Compatibility issues for Microsoft.Bot.Schema.dll