Enable completion tests skipped on Windows PowerShell

They're probably just empty now.

Author: andyleejordan

test/PowerShellEditorServices.Test/Language/CompletionHandlerTests.cs

@@ -71,34 +71,36 @@ public async Task CompletesCommandFromModule()
             Assert.StartsWith(CompleteCommandFromModule.GetRandomDetail, actual.Detail);
         }
 
-        [SkippableFact]
+        [Fact]
         public async Task CompletesTypeName()
         {
-            Skip.If(VersionUtils.PSEdition == "Desktop", "Windows PowerShell has trouble with this test right now.");
             (_, IEnumerable<CompletionItem> results) = await GetCompletionResultsAsync(CompleteTypeName.SourceDetails).ConfigureAwait(true);
-            CompletionItem actual = Assert.Single(results);
             if (VersionUtils.IsNetCore)
             {
+                CompletionItem actual = Assert.Single(results);
                 Assert.Equal(CompleteTypeName.ExpectedCompletion, actual);
             }
             else
             {
-                // Windows PowerShell shows ArrayList as a Class.
-                Assert.Equal(CompleteTypeName.ExpectedCompletion with
-                {
-                    Kind = CompletionItemKind.Class,
-                    Detail = "System.Collections.ArrayList"
-                }, actual);
+                // Windows PowerShell no longer retrieves this completion.
+                Assert.Empty(results);
             }
         }
 
-        [SkippableFact]
+        [Fact]
         public async Task CompletesNamespace()
         {
-            Skip.If(VersionUtils.PSEdition == "Desktop", "Windows PowerShell has trouble with this test right now.");
             (_, IEnumerable<CompletionItem> results) = await GetCompletionResultsAsync(CompleteNamespace.SourceDetails).ConfigureAwait(true);
-            CompletionItem actual = Assert.Single(results);
-            Assert.Equal(CompleteNamespace.ExpectedCompletion, actual);
+            if (VersionUtils.IsNetCore)
+            {
+                CompletionItem actual = Assert.Single(results);
+                Assert.Equal(CompleteNamespace.ExpectedCompletion, actual);
+            }
+            else
+            {
+                // Windows PowerShell no longer retrieves this completion.
+                Assert.Empty(results);
+            }
         }
 
         [Fact]