message: Removed high level API samples.
diff: <Reference Include="System.Xml" />
  </ItemGroup>
  <ItemGroup>
  - <Compile Include="Api\LedgerRequest.cs" />
  - <Compile Include="Api\SignedLedgerRequest.cs" />
  - <Compile Include="Api\Wallet.cs" />
  - <Compile Include="Api\Ledger.cs" />
  <Compile Include="Wrapper\Agent.cs" />
  <Compile Include="Wrapper\AgentObservers.cs" />
  <Compile Include="Wrapper\AnonCredsResults.cs" />
  