Remove "else if" dup small block

Was there since 2008-04-03 (with a format changed 2012-04-06)

Change-Id: Ib7fb741f5c39f3547002246706575ef0694009dd

sd/source/ui/slideshow/slideshowimpl.cxx

@@ -3520,11 +3520,6 @@ void PresentationSettingsEx::SetPropertyValue( const OUString& rProperty, const
         if( rValue >>= mbAnimationAllowed )
             return;
     }
-    else if ( rProperty == "AllowAnimations" )
-    {
-        if( rValue >>= mbAnimationAllowed )
-            return;
-    }
     else if ( rProperty == "FirstPage" )
     {
         OUString aPresPage;