Revert "#i103131# in doubt treat unicode variation selectors as invisible(cherry…

Revert "#i103131# in doubt treat unicode variation selectors as invisible(cherry picked from commit 179f88df)"

This reverts commit 6840ba61.

We don't want this since we can now support variation selectors with
HarfBuzz.

vcl/source/gdi/sallayout.cxx

@@ -337,11 +337,6 @@ inline bool IsControlChar( sal_UCS4 cChar )
     // byte order markers and invalid unicode
     if( (cChar == 0xFEFF) || (cChar == 0xFFFE) || (cChar == 0xFFFF) )
         return true;
-    // variation selectors
-    if( (0xFE00 <= cChar) && (cChar <= 0xFE0F) )
-        return true;
-    if( (0xE0100 <= cChar) && (cChar <= 0xE01EF) )
-        return true;
     return false;
 }