writerfilter: drop unused rtf:{ICOFORE,ICOBACK,IPAT,shptxt} tokens

Change-Id: Ib228c985d0d276fccfa77b9c2dac3ba69522a05e

writerfilter/source/dmapper/DomainMapper.cxx

@@ -567,12 +567,6 @@ void DomainMapper::lcl_attribute(Id nName, Value & val)
                 m_pImpl->GetFIB().SetData( nName, nIntValue );
             }
             break;
-        case NS_rtf::LN_ICOFORE:
-            break;
-        case NS_rtf::LN_ICOBACK:
-            break;
-        case NS_rtf::LN_IPAT:
-            break;
         case NS_rtf::LN_SHDFORECOLOR:
             break;
         case NS_rtf::LN_SHDBACKCOLOR:

writerfilter/source/dmapper/GraphicImport.cxx

@@ -811,9 +811,6 @@ void GraphicImport::lcl_attribute(Id nName, Value & val)
         case NS_rtf::LN_FANCHORLOCK:
         case NS_rtf::LN_CTXBX:
         break;
-        case NS_rtf::LN_shptxt:
-            //todo: text content
-        break;
         case NS_rtf::LN_dffheader: break;
         case NS_ooxml::LN_CT_PositiveSize2D_cx:// 90407;
         case NS_ooxml::LN_CT_PositiveSize2D_cy:// 90408;