misleading and unnecessary fall through comments

Change-Id: I6309a484c3411bc1151ff2ccd276d70600854021
Reviewed-on: https://gerrit.libreoffice.org/67191
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
diff --git a/vcl/source/fontsubset/fontsubset.cxx b/vcl/source/fontsubset/fontsubset.cxx
index 2b50ed4..412a1dd 100644
--- a/vcl/source/fontsubset/fontsubset.cxx
+++ b/vcl/source/fontsubset/fontsubset.cxx
@@ -99,9 +99,7 @@ bool FontSubsetInfo::CreateFontSubset(
    case FontType::ANY_TYPE1:
        bOK = CreateFontSubsetFromType1( pOutGlyphWidths);
        break;
        // fall through
    case FontType::NO_FONT:
        // fall through
    default:
        OSL_FAIL( "unhandled type in CreateFontSubset()");
        break;