Engine.UnloadTypePaletteFiles
Unloads the TestStand Engine's list of type palette files.
Type palette files contain step type and data type definitions. UnloadTypePaletteFiles is the method that the sequence editor and user interfaces call on the TestStand Engine to unload these files when they exit. Call this method if LoadTypePaletteFilesEx was previously called and the type palette files need to be unloaded.