-Werror,-Wunused-variable

...after 0e7de7e614 "tdf#167883 use
appendTextPortion to construct svx text object"

Change-Id: I3882d6a3852b4e4d30e3406ea5f0b2703afa8f8f
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/198112
Reviewed-by: Stephan Bergmann <stephan.bergmann@collabora.com>
Tested-by: Jenkins

chart2/source/view/main/ShapeFactory.cxx

@@ -2232,7 +2232,6 @@ rtl::Reference<SvxShapeText>
             // Lock during property update to prevent unnecessary layout work.
             xShape->addActionLock();
 
-            uno::Reference< beans::XPropertySet > xSelectionProp(xSelectionCursor, uno::UNO_QUERY);
             if(bStackCharacters)
             {
                 //if the characters should be stacked we use only the first character properties for code simplicity