Williamhe/1486537 updates 2 build server binaries signing (#1250)

* Remove buildserver signing from oryx-ci pipeline

* Remove temporarily branch condition

* Update to re-add job for build server signing

* Update build server binary name to sign

src/BuildServer/BuildServer.signproj

@@ -10,7 +10,7 @@
 
 	<ItemGroup>
 		<ProjectReference Include="..\BuildServer\BuildServer.csproj" />
-		<FilesToSign Include="$(OutDir)\BuildServer.dll;&#xD;&#xA;                          $(OutDir)\Microsoft.Oryx.BuildServer.dll;">
+		<FilesToSign Include="$(OutDir)\Microsoft.Oryx.BuildServer.dll;">
 			<Authenticode>Microsoft400</Authenticode>
 			<StrongName>StrongName</StrongName>
 		</FilesToSign>