Remove Deprecated Methods and Properties

[KenitoInc]

https://github.com/OData/odata.net/blob/5e79470b631061830c33e35b8cd1cbf06167f1f4/src/Microsoft.OData.Client/DataServiceQueryOfT.cs#L332 https://github.com/OData/odata.net/blob/5e79470b631061830c33e35b8cd1cbf06167f1f4/src/Microsoft.OData.Client/DataServiceQueryOfT.cs#L341 https://github.com/OData/odata.net/blob/5e79470b631061830c33e35b8cd1cbf06167f1f4/src/Microsoft.OData.Client/QueryOperationResponse.cs#L60 https://github.com/OData/odata.net/blob/5e79470b631061830c33e35b8cd1cbf06167f1f4/src/Microsoft.OData.Client/QueryOperationResponseOfT.cs#L45 https://github.com/OData/odata.net/blob/5e79470b631061830c33e35b8cd1cbf06167f1f4/src/Microsoft.OData.Client/Serialization/HttpClientRequestMessage.cs#L182 https://github.com/OData/odata.net/blob/5e79470b631061830c33e35b8cd1cbf06167f1f4/src/Microsoft.OData.Client/Serialization/HttpWebRequestMessage.cs#L20 https://github.com/OData/odata.net/blob/5e79470b631061830c33e35b8cd1cbf06167f1f4/src/Microsoft.OData.Core/ODataMessageWriter.cs#L323 https://github.com/OData/odata.net/blob/5e79470b631061830c33e35b8cd1cbf06167f1f4/src/Microsoft.OData.Core/ODataMessageWriter.cs#L338 https://github.com/OData/odata.net/blob/5e79470b631061830c33e35b8cd1cbf06167f1f4/src/Microsoft.OData.Core/ODataMessageReader.cs#L442 https://github.com/OData/odata.net/blob/5e79470b631061830c33e35b8cd1cbf06167f1f4/src/Microsoft.OData.Core/ODataMessageReader.cs#L458 https://github.com/OData/odata.net/blob/5e79470b631061830c33e35b8cd1cbf06167f1f4/src/Microsoft.OData.Core/ODataSimplifiedOptions.cs#L87 https://github.com/OData/odata.net/blob/5e79470b631061830c33e35b8cd1cbf06167f1f4/src/Microsoft.OData.Core/UriParser/Aggregation/AggregateToken.cs#L45 https://github.com/OData/odata.net/blob/5e79470b631061830c33e35b8cd1cbf06167f1f4/src/Microsoft.OData.Core/UriParser/Aggregation/AggregateTransformationNode.cs#L35

Assemblies affected

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Expected result

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Additional detail

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[corranrogue9]

If we are not planning on removing something currently marked obsolete, we should remove the obsolete attribute

[chrisspre]

See also the related #2379