Remove Platform.HasDriveAutoMounting query

src/System.Management.Automation/CoreCLR/CorePsPlatform.cs

@@ -217,13 +217,6 @@ namespace System.Management.Automation
 
         }
 
-        // This is mainly with respect to the auto-mounting of
-        // disconnected network drives on Windows
-        internal static bool HasDriveAutoMounting()
-        {
-            return IsWindows;
-        }
-
         // Linux does not have a registry
         internal static bool HasRegistrySupport()
         {

src/System.Management.Automation/engine/SessionStateDriveAPIs.cs

@@ -1469,11 +1469,12 @@ namespace System.Management.Automation
                         bool driveIsValid = true;
 
                         // If the drive is auto-mounted, ensure that it still exists, or remove the drive.
-                        // note: not all platforms support drive auto-mounting
-                        if (Platform.HasDriveAutoMounting() && (drive.IsAutoMounted || IsAStaleVhdMountedDrive(drive)))
+#if !LINUX
+                        if (drive.IsAutoMounted || IsAStaleVhdMountedDrive(drive))
                         {
                             driveIsValid = ValidateOrRemoveAutoMountedDrive(drive, lookupScope);
                         }
+#endif
                         if(drive.Name.Length == 1)
                         {
                             if(!(driveNames.Contains(drive.Name)))

test/csharp/test_CorePsPlatform.cs

@@ -15,12 +15,6 @@ namespace PSTests
             Assert.True(Platform.IsCore);
         }
 
-        [Fact]
-        public static void TestHasDriveAutoMounting()
-        {
-            Assert.False(Platform.HasDriveAutoMounting());
-        }
-
         [Fact]
         public static void TestHasRegistrySupport()
         {