Remove Self-Signed Certificate Configurations to Fix Github Publc Samples Build Pipeline (#430)

* Try adding arm64

* Try removing changes to wapproj

Author: nums11

Samples/WinMLSamplesGallery/WinMLSamplesGallery (Package)/WinMLSamplesGallery (Package).wapproj

@@ -42,13 +42,6 @@
     <DefaultLanguage>en-US</DefaultLanguage>
     <AppxPackageSigningEnabled>False</AppxPackageSigningEnabled>
     <EntryPointProjectUniqueName>..\WinMLSamplesGallery\WinMLSamplesGallery.csproj</EntryPointProjectUniqueName>
-    <GenerateAppInstallerFile>False</GenerateAppInstallerFile>
-    <PackageCertificateThumbprint>C76B5CF0853257203728A675BFE419AD597CFF2E</PackageCertificateThumbprint>
-    <AppxPackageSigningTimestampDigestAlgorithm>SHA256</AppxPackageSigningTimestampDigestAlgorithm>
-    <AppxAutoIncrementPackageRevision>False</AppxAutoIncrementPackageRevision>
-    <GenerateTestArtifacts>True</GenerateTestArtifacts>
-    <AppxBundlePlatforms>x86|x64</AppxBundlePlatforms>
-    <HoursBetweenUpdateChecks>0</HoursBetweenUpdateChecks>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|arm64'">
     <AppxBundle>Always</AppxBundle>