Remove redundant variable existDatabase
Remove redundant variable existDatabase

MCGallaspy/installers,MCGallaspy/installers,mrpau/installers,benjaoming/installers,MCGallaspy/installers,ruimalheiro/installers,learningequality/ka-lite-installers,benjaoming/installers,mrpau/installers,learningequality/ka-lite-installers,learningequality/installers,ruimalheiro/installers,mrpau/installers,benjaoming/installers,benjaoming/installers,learningequality/ka-lite-installers,ruimalheiro/installers,learningequality/installers,mrpau/installers,learningequality/installers,learningequality/ka-lite-installers,ruimalheiro/installers,MCGallaspy/installers,learningequality/installers