Remove references to NETCOREAPP1_0

Author: drewnoakes

src/NetMQ.Tests/ExceptionTests.cs

@@ -1,7 +1,5 @@
 #nullable disable
 
-#if !NETCOREAPP1_0
-
 using System.IO;
 using System.Runtime.Serialization.Formatters.Binary;
 using Xunit;
@@ -130,5 +128,3 @@ private static T Deserialise<T>(Stream stream)
         #endregion
     }
 }
-
-#endif

src/NetMQ.Tests/PgmTests.cs

@@ -80,11 +80,7 @@ public void ConnectBothSockets()
         [Fact(Skip = "Requires MSMQ for PGM sockets")]
         public void UseInterface()
         {
-#if NETCOREAPP1_0
-            var hostEntry = Dns.GetHostEntryAsync(Dns.GetHostName()).Result;
-#else
             var hostEntry = Dns.GetHostEntry(Dns.GetHostName());
-#endif
 
             string ip = hostEntry.AddressList
                 .Where(addr => addr.AddressFamily == AddressFamily.InterNetwork)