Remove the assembly version calculation workaround once IdentityModel implements a solution. [Workaround patch](https://github.com/dotnet/dotnet/commit/e64f84d6312cdaf227d26aeabfa4817862404d59#diff-3320342fb1e750a5b32fad94f95656cc6cdf893a58052432f5efd1fe2fa306fa) Related to https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/issues/3388 and https://github.com/dotnet/dotnet/issues/4037