Remove property defaultThumb and review default thumbs

Author: wutschel

XBMC Remote/DetailViewController.m

@@ -2053,7 +2053,7 @@ - (void)setCellLayoutParameters {
         defaultThumb = parameters[@"defaultThumb"];
     }
     else {
-        defaultThumb = menuItem.defaultThumb;
+        defaultThumb = @"nocover_filemode";
     }
     if (parameters[@"rowHeight"]) {
         cellHeight = [parameters[@"rowHeight"] intValue];

XBMC Remote/mainMenu.h

@@ -56,7 +56,6 @@ typedef NS_ENUM(NSInteger, ViewModes) {
 @property (nonatomic) BOOL enableSection;
 @property (nonatomic, copy) NSString *icon;
 @property (nonatomic, copy) NSArray *mainMethod;
-@property (nonatomic, copy) NSString *defaultThumb;
 @property (nonatomic, copy) NSArray *mainButtons;
 @property (nonatomic, copy) NSArray *mainFields;
 @property (nonatomic, strong) NSMutableArray *mainParameters;