remove dead code

we already know the IsAlpha is true from the outer if condition

Change-Id: I627a9b952cb63154baf773b6162b422de4f253bc
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/145157
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
diff --git a/vcl/source/helper/canvasbitmap.cxx b/vcl/source/helper/canvasbitmap.cxx
index 3f85071..2e7a83b 100644
--- a/vcl/source/helper/canvasbitmap.cxx
+++ b/vcl/source/helper/canvasbitmap.cxx
@@ -1099,7 +1099,6 @@ uno::Sequence<rendering::ARGBColor> SAL_CALL VclCanvasBitmap::convertIntegerToAR
    {
        const tools::Long      nNonAlphaBytes( (m_nBitsPerInputPixel+7)/8 );
        const sal_Int32 nBytesPerPixel((m_nBitsPerOutputPixel+7)/8);
        const sal_uInt8 nAlphaFactor( m_aBmpEx.IsAlpha() ? 1 : 255 );
        for( std::size_t i=0; i<nLen; i+=nBytesPerPixel )
        {
            // if palette, index is guaranteed to be 8 bit
@@ -1109,7 +1108,7 @@ uno::Sequence<rendering::ARGBColor> SAL_CALL VclCanvasBitmap::convertIntegerToAR
                pBmpAcc->GetPixelFromData(pIn,0);

            // TODO(F3): Convert result to sRGB color space
            *pOut++ = rendering::ARGBColor(1.0 - toDoubleColor(nAlphaFactor*pIn[nNonAlphaBytes]),
            *pOut++ = rendering::ARGBColor(1.0 - toDoubleColor(pIn[nNonAlphaBytes]),
                                           toDoubleColor(aCol.GetRed()),
                                           toDoubleColor(aCol.GetGreen()),
                                           toDoubleColor(aCol.GetBlue()));
@@ -1155,7 +1154,6 @@ uno::Sequence<rendering::ARGBColor> SAL_CALL VclCanvasBitmap::convertIntegerToPA
    {
        const tools::Long      nNonAlphaBytes( (m_nBitsPerInputPixel+7)/8 );
        const sal_Int32 nBytesPerPixel((m_nBitsPerOutputPixel+7)/8);
        const sal_uInt8 nAlphaFactor( m_aBmpEx.IsAlpha() ? 1 : 255 );
        for( std::size_t i=0; i<nLen; i+=nBytesPerPixel )
        {
            // if palette, index is guaranteed to be 8 bit
@@ -1165,7 +1163,7 @@ uno::Sequence<rendering::ARGBColor> SAL_CALL VclCanvasBitmap::convertIntegerToPA
                pBmpAcc->GetPixelFromData(pIn,0);

            // TODO(F3): Convert result to sRGB color space
            const double nAlpha( 1.0 - toDoubleColor(nAlphaFactor*pIn[nNonAlphaBytes]) );
            const double nAlpha( 1.0 - toDoubleColor(pIn[nNonAlphaBytes]) );
            *pOut++ = rendering::ARGBColor(nAlpha,
                                           nAlpha*toDoubleColor(aCol.GetRed()),
                                           nAlpha*toDoubleColor(aCol.GetGreen()),