How to delete [Deprecated] NUnit (Install)

NOTE: This package has been deprecated in favour of the NUnit 3 Console Runner package. Please use this package instead.

NUnit is a unit-testing framework for all .Net languages. Initially ported from JUnit, it is an xUnit based unit testing tool for Microsoft .NET. It is written entirely in C# and has been completely redesigned to take advantage of many .NET language features, for example custom attributes and other reflection related capabilities. NUnit brings xUnit to all .NET languages.