-Werror,-Wunused-private-field

...since 98b86bff2c "tdf#165606 sd: fix master
slide panel doesn't resized correctly"

Change-Id: Ie67b2cdbb9b870aa299b33ad0b8428ce7eb88618
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/182996
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <stephan.bergmann@allotropia.de>

sd/source/ui/sidebar/MasterPagesSelector.cxx

@@ -60,7 +60,6 @@ MasterPagesSelector::MasterPagesSelector(weld::Widget* pParent, SdDrawDocument&
     , mrDocument(rDocument)
     , mrBase(rBase)
     , mxSidebar(std::move(xSidebar))
-    , maIconViewId(rIconViewId)
 {
     mxPreviewIconView->connect_item_activated(LINK(this, MasterPagesSelector, MasterPageSelected));
     mxPreviewIconView->connect_mouse_press(LINK(this, MasterPagesSelector, MousePressHdl));

sd/source/ui/sidebar/MasterPagesSelector.hxx

@@ -150,7 +150,6 @@ protected:
 
 private:
     css::uno::Reference<css::ui::XSidebar> mxSidebar;
-    OUString maIconViewId;
 
     /** The offset between ValueSet index and MasterPageContainer::Token
         last seen.  This value is used heuristically to speed up the lookup