We never use m_spaces, so kill it

core/textpage.cpp

@@ -1096,8 +1096,6 @@ void TextPagePrivate::removeSpace()
     {
         if((*it)->text() == str)
         {
-            // create new Entity, otherwise there might be possible memory leakage
-            m_spaces.append( new TinyTextEntity( (*it)->text(),(*it)->area ) );
             delete *it;
             it = m_words.erase(it);
         }

core/textpage_p.h

@@ -108,7 +108,6 @@ class TextPagePrivate
         // variables those can be accessed directly from TextPage
         QMap<int, RegionText> m_word_chars_map;
         RegionTextList m_XY_cut_tree;
-        TextList m_spaces;
         TextList m_words;
         QMap< int, SearchPoint* > m_searchPoints;
         PagePrivate *m_page;