cocoaui: fix album art widget crash / nib not found error

Author: Oleksiy-Yakovenko

plugins/cocoaui/DesignMode/Widgets/AlbumArt/AlbumArtWidgetViewController.m

@@ -52,7 +52,6 @@ @interface AlbumArtWidgetViewController () <CoverManagerListener, NSMenuDelegate
 @implementation AlbumArtWidgetViewController
 
 - (void)loadView {
-    [super loadView];
     self.imageView = [AlbumArtImageView new];
     self.imageView.imageAlignment = NSImageAlignCenter;
     self.imageView.imageScaling = NSImageScaleProportionallyUpOrDown;