Fix test regression due to #77.

Author: rwasef1830

test/EntityFramework6.Npgsql.Tests/EntityFrameworkBasicTests.cs

@@ -85,12 +85,6 @@ public void InsertAndSelect()
         [Test]
         public void InsertAndSelectSchemaless()
         {
-            using (var context = new BloggingContext(ConnectionString))
-            {
-                context.Database.Delete();
-                context.Database.Create();
-            }
-
             using (var context = new BloggingContext(ConnectionString))
             {
                 context.NoColumnsEntities.Add(new NoColumnsEntity());

test/EntityFramework6.Npgsql.Tests/Support/EntityFrameworkTestBase.cs

@@ -73,6 +73,7 @@ protected void SetUp()
             {
                 context.Blogs.RemoveRange(context.Blogs);
                 context.Posts.RemoveRange(context.Posts);
+                context.NoColumnsEntities.RemoveRange(context.NoColumnsEntities);
                 context.SaveChanges();
             }
         }