diff --git a/Revit/Speckle.Revit.Interfaces/Extensions.cs b/Revit/Speckle.Revit.Interfaces/Extensions.cs
deleted file mode 100644
index cae00de5..00000000
--- a/Revit/Speckle.Revit.Interfaces/Extensions.cs
+++ /dev/null
@@ -1,35 +0,0 @@
-namespace Speckle.Revit.Interfaces;
-
-public static class Extensions
-{
-  public static IList<IRevitElementId> GetHostedElementIds(
-    this IRevitElement host,
-    IRevitFilterFactory revitFilterFactory
-  )
-  {
-    IList<IRevitElementId> ids;
-    if (host is IRevitHostObject hostObject)
-    {
-      ids = hostObject.FindInserts(true, false, false, false);
-    }
-    else
-    {
-      var typeFilter = revitFilterFactory.CreateElementIsElementTypeFilter(true);
-      var categoryFilter = revitFilterFactory.CreateElementMulticategoryFilter(
-        new List<RevitBuiltInCategory>()
-        {
-          RevitBuiltInCategory.OST_CLines,
-          RevitBuiltInCategory.OST_SketchLines,
-          RevitBuiltInCategory.OST_WeakDims
-        },
-        true
-      );
-      ids = host.GetDependentElements(revitFilterFactory.CreateLogicalAndFilter(typeFilter, categoryFilter));
-    }
-
-    // dont include host elementId
-    ids.Remove(host.Id);
-
-    return ids;
-  }
-}