delete nuspec file for the plugin project

no longer needed

Author: JohnTheGr8

Flow.Launcher.sln

@@ -63,7 +63,6 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		README.md = README.md
 		SolutionAssemblyInfo.cs = SolutionAssemblyInfo.cs
 		Scripts\flowlauncher.nuspec = Scripts\flowlauncher.nuspec
-		Scripts\flowlauncher.plugin.nuspec = Scripts\flowlauncher.plugin.nuspec
 	EndProjectSection
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "HelloWorldCSharp", "Plugins\HelloWorldCSharp\HelloWorldCSharp.csproj", "{03FFA443-5F50-48D5-8869-F3DF316803AA}"