Get rid of unused variables

src/propgrid/propgrid.cpp

@@ -400,8 +400,6 @@ void wxPropertyGrid::Init1()
     m_iconWidth = wxPG_ICON_WIDTH;
 #endif
 
-    m_prevVY = -1;
-
     m_gutterWidth = wxPG_GUTTER_MIN;
     m_subgroup_extramargin = 10;
 
@@ -2658,8 +2656,6 @@ void wxPropertyGrid::Clear()
 
     m_propHover = NULL;
 
-    m_prevVY = 0;
-
     RecalculateVirtualSize();
 
     // Need to clear some area at the end

src/propgrid/propgridpagestate.cpp

@@ -208,7 +208,6 @@ wxPropertyGridPageState::wxPropertyGridPageState()
     m_currentCategory = NULL;
     m_width = 0;
     m_virtualHeight = 0;
-    m_lastCaptionBottomnest = true;
     m_itemsAdded = false;
     m_anyModified = false;
     m_vhCalcPending = false;
@@ -313,7 +312,6 @@ void wxPropertyGridPageState::DoClear()
         m_dictName.clear();
 
         m_currentCategory = NULL;
-        m_lastCaptionBottomnest = true;
         m_itemsAdded = false;
 
         m_virtualHeight = 0;
@@ -1772,15 +1770,6 @@ wxPGProperty* wxPropertyGridPageState::DoInsert( wxPGProperty* parent, int index
             m_abcArray->DoAddChild( property, index, true );
     }
 
-    // category stuff
-    if ( property->IsCategory() )
-    {
-        // This is a category caption item.
-
-        // Last caption is not the bottom one (this info required by append)
-        m_lastCaptionBottomnest = false;
-    }
-
     // Only add name to hashmap if parent is root or category
     if ( !property->GetBaseName().empty() &&
         (parentIsCategory || parentIsRoot) )