QmlDesigner: Fix duplicate condition

Change-Id: I06637477487daf8b071bbffa4f5007dc0e7d7e6f
Reviewed-by: Marco Bubke <marco.bubke@digia.com>

src/plugins/qmldesigner/components/formeditor/snapper.cpp

@@ -678,9 +678,7 @@ void Snapper::adjustAnchoringOfItem(FormEditorItem *formEditorItem)
                          containerFormEditorItem()->bottomSnappingOffsets(),
                          AnchorLineTop,
                          AnchorLineBottom);
-    }
 
-    if (!qmlAnchors.instanceHasAnchor(AnchorLineVerticalCenter)) {
         adjustAnchorLine(qmlItemNode,
                          containerFormEditorItem()->qmlItemNode(),
                          containerFormEditorItem()->bottomSnappingLines(),