SessionFile::fileName can't return a empty filename
SessionFile::fileName can't return a empty filename

So remove code that checks for that

Change-Id: I6e717f27713fae0b7487e18a45790b82e4e1e8cd
Reviewed-by: Tobias Hunger <012f8d714267bccc9d4766fbeace9f175fcc70c4@nokia.com>

xianian/qt-creator,danimo/qt-creator,syntheticpp/qt-creator,xianian/qt-creator,malikcjm/qtcreator,Distrotech/qtcreator,AltarBeastiful/qt-creator,azat/qtcreator,jonnor/qt-creator,jonnor/qt-creator,KDAB/KDAB-Creator,KDE/android-qt-creator,omniacreator/qtcreator,duythanhphan/qt-creator,xianian/qt-creator,danimo/qt-creator,KDE/android-qt-creator,Distrotech/qtcreator,duythanhphan/qt-creator,azat/qtcreator,maui-packages/qt-creator,farseerri/git_code,danimo/qt-creator,AltarBeastiful/qt-creator,KDE/android-qt-creator,richardmg/qtcreator,danimo/qt-creator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,azat/qtcreator,Distrotech/qtcreator,xianian/qt-creator,farseerri/git_code,azat/qtcreator,jonnor/qt-creator,malikcjm/qtcreator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,omniacreator/qtcreator,amyvmiwei/qt-creator,ostash/qt-creator-i18n-uk,ostash/qt-creator-i18n-uk,azat/qtcreator,duythanhphan/qt-creator,ostash/qt-creator-i18n-uk,Distrotech/qtcreator,KDE/android-qt-creator,omniacreator/qtcreator,kuba1/qtcreator,KDAB/KDAB-Creator,martyone/sailfish-qtcreator,duythanhphan/qt-creator,colede/qtcreator,hdweiss/qt-creator-visualizer,danimo/qt-creator,kuba1/qtcreator,kuba1/qtcreator,farseerri/git_code,syntheticpp/qt-creator,kuba1/qtcreator,martyone/sailfish-qtcreator,maui-packages/qt-creator,danimo/qt-creator,amyvmiwei/qt-creator,darksylinc/qt-creator,hdweiss/qt-creator-visualizer,martyone/sailfish-qtcreator,ostash/qt-creator-i18n-uk,omniacreator/qtcreator,KDAB/KDAB-Creator,richardmg/qtcreator,danimo/qt-creator,hdweiss/qt-creator-visualizer,xianian/qt-creator,KDE/android-qt-creator,martyone/sailfish-qtcreator,KDAB/KDAB-Creator,farseerri/git_code,hdweiss/qt-creator-visualizer,amyvmiwei/qt-creator,Distrotech/qtcreator,xianian/qt-creator,omniacreator/qtcreator,ostash/qt-creator-i18n-uk,darksylinc/qt-creator,richardmg/qtcreator,darksylinc/qt-creator,jonnor/qt-creator,omniacreator/qtcreator,AltarBeastiful/qt-creator,AltarBeastiful/qt-creator,malikcjm/qtcreator,colede/qtcreator,omniacreator/qtcreator,martyone/sailfish-qtcreator,Distrotech/qtcreator,syntheticpp/qt-creator,syntheticpp/qt-creator,richardmg/qtcreator,darksylinc/qt-creator,malikcjm/qtcreator,duythanhphan/qt-creator,malikcjm/qtcreator,kuba1/qtcreator,richardmg/qtcreator,KDE/android-qt-creator,colede/qtcreator,malikcjm/qtcreator,xianian/qt-creator,darksylinc/qt-creator,kuba1/qtcreator,syntheticpp/qt-creator,richardmg/qtcreator,kuba1/qtcreator,xianian/qt-creator,syntheticpp/qt-creator,xianian/qt-creator,KDE/android-qt-creator,hdweiss/qt-creator-visualizer,farseerri/git_code,martyone/sailfish-qtcreator,Distrotech/qtcreator,kuba1/qtcreator,richardmg/qtcreator,danimo/qt-creator,KDAB/KDAB-Creator,farseerri/git_code,darksylinc/qt-creator,hdweiss/qt-creator-visualizer,farseerri/git_code,azat/qtcreator,ostash/qt-creator-i18n-uk,martyone/sailfish-qtcreator,maui-packages/qt-creator,darksylinc/qt-creator,amyvmiwei/qt-creator,ostash/qt-creator-i18n-uk,KDE/android-qt-creator,darksylinc/qt-creator,colede/qtcreator,martyone/sailfish-qtcreator,malikcjm/qtcreator,maui-packages/qt-creator,duythanhphan/qt-creator,jonnor/qt-creator,maui-packages/qt-creator,farseerri/git_code,amyvmiwei/qt-creator,jonnor/qt-creator,colede/qtcreator,AltarBeastiful/qt-creator,colede/qtcreator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,syntheticpp/qt-creator,danimo/qt-creator,maui-packages/qt-creator,maui-packages/qt-creator,colede/qtcreator,KDAB/KDAB-Creator,AltarBeastiful/qt-creator,duythanhphan/qt-creator,kuba1/qtcreator