Remove unused GetDotNetVersion method

src/NzbDrone.Common/EnvironmentInfo/PlatformInfo.cs

@@ -1,5 +1,4 @@
 using System;
-using Microsoft.Win32;
 
 namespace NzbDrone.Common.EnvironmentInfo
 {
@@ -51,78 +50,5 @@ namespace NzbDrone.Common.EnvironmentInfo
         {
             return _version;
         }
-
-        private static Version GetDotNetVersion()
-        {
-            try
-            {
-                const string subkey = @"SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full\";
-                using (var ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey(subkey))
-                {
-                    if (ndpKey == null)
-                    {
-                        return new Version(4, 0);
-                    }
-
-                    var releaseKey = (int)ndpKey.GetValue("Release");
-
-                    if (releaseKey >= 528040)
-                    {
-                        return new Version(4, 8, 0);
-                    }
-
-                    if (releaseKey >= 461808)
-                    {
-                        return new Version(4, 7, 2);
-                    }
-
-                    if (releaseKey >= 461308)
-                    {
-                        return new Version(4, 7, 1);
-                    }
-
-                    if (releaseKey >= 460798)
-                    {
-                        return new Version(4, 7);
-                    }
-
-                    if (releaseKey >= 394802)
-                    {
-                        return new Version(4, 6, 2);
-                    }
-
-                    if (releaseKey >= 394254)
-                    {
-                        return new Version(4, 6, 1);
-                    }
-
-                    if (releaseKey >= 393295)
-                    {
-                        return new Version(4, 6);
-                    }
-
-                    if (releaseKey >= 379893)
-                    {
-                        return new Version(4, 5, 2);
-                    }
-
-                    if (releaseKey >= 378675)
-                    {
-                        return new Version(4, 5, 1);
-                    }
-
-                    if (releaseKey >= 378389)
-                    {
-                        return new Version(4, 5);
-                    }
-                }
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine("Couldnt get .NET framework version: " + ex.ToString());
-            }
-
-            return new Version(4, 0);
-        }
     }
 }