Remove GdipEmfToWmfBits from CachedBitmap page

See discussion here: dotnet/winforms#8822

It doesn't belong here

/cc @reflectronic @JeremyKuhne

desktop-src/gdiplus/-gdiplus-cachedbitmap-flat.md

@@ -21,7 +21,6 @@ The following flat API functions are wrapped by the [**CachedBitmap**](/windows/
 | GpStatus WINGDIPAPI GdipCreateCachedBitmap( GpBitmap \*bitmap, GpGraphics \*graphics, GpCachedBitmap \*\*cachedBitmap )   | [**CachedBitmap::CachedBitmap**](/windows/win32/api/gdiplusheaders/nf-gdiplusheaders-cachedbitmap-cachedbitmap(constcachedbitmap_)) | Creates a [**CachedBitmap::CachedBitmap**](/windows/win32/api/gdiplusheaders/nf-gdiplusheaders-cachedbitmap-cachedbitmap(constcachedbitmap_)) object based on a [**Bitmap**](/windows/desktop/api/gdiplusheaders/nl-gdiplusheaders-bitmap) object and a [**Graphics**](/windows/desktop/api/gdiplusgraphics/nl-gdiplusgraphics-graphics) object. The cached bitmap takes the pixel data from the **Bitmap** object and stores it in a format that is optimized for the display device associated with the **Graphics** object. |
 | GpStatus WINGDIPAPI GdipDeleteCachedBitmap(GpCachedBitmap \*cachedBitmap)<br/>                                      | ~CachedBitmap()                                                                                 | Cleans up resources used by a [**CachedBitmap**](/windows/desktop/api/gdiplusheaders/nl-gdiplusheaders-cachedbitmap) object.                                                                                                                                                                                                                                                                                                                                |
 | GpStatus WINGDIPAPI GdipDrawCachedBitmap( GpGraphics \*graphics, GpCachedBitmap \*cachedBitmap, INT x, INT y )            | [**Graphics::DrawCachedBitmap**](/windows/desktop/api/Gdiplusgraphics/nf-gdiplusgraphics-graphics-drawcachedbitmap)          | The [**Graphics::DrawCachedBitmap**](/windows/desktop/api/Gdiplusgraphics/nf-gdiplusgraphics-graphics-drawcachedbitmap) method draws the image stored in a [**CachedBitmap**](/windows/desktop/api/gdiplusheaders/nl-gdiplusheaders-cachedbitmap) object.                                                                                                                                                                                                                                |
-| UINT WINGDIPAPI GdipEmfToWmfBits( HENHMETAFILE hemf, UINT cbData16, LPBYTE pData16, INT iMapMode, INT eFlags )<br/> | [**Metafile::EmfToWmfBits**](/windows/desktop/api/gdiplusheaders/nf-gdiplusheaders-metafile-emftowmfbits)                         | Converts an enhanced-format metafile to a Windows Metafile Format (WMF) metafile and stores the converted records in a specified buffer.                                                                                                                                                                                                                                                                                       |