Removed the assets_scan_folder.setreg file as it is no supported for

adding scan folders to the AssetProcessor.

Enabled the MaterialEditor and UiBasics gems to allow the AP to pick up
their ScanFolders via their .Builders targets.

Signed-off-by: lumberyard-employee-dm <[email protected]>

Gem/Code/enabled_gems.cmake

@@ -50,4 +50,6 @@ set(ENABLED_GEMS
     StartingPointInput
     EditorPythonBindings
     PrefabBuilder
+    MaterialEditor
+    UiBasics
 )

Registry/assets_scan_folders.setreg

@@ -1,17 +0,0 @@
-{
-    "Amazon":
-    {
-        "Gems":
-        {
-            "MultiplayerSample.Assets":
-            {
-                "SourcePaths":
-                [
-                    "Gems/Atom/Tools/MaterialEditor",
-                    "Gems/PhysicsEntities",
-                    "Gems/UiBasics"
-                ]
-            }
-        }
-    }
-}