Use Q_ENUM instead of obsoleted Q_ENUMS

It fixes the following warning:
Use Q_ENUM instead of Q_ENUMS [clazy-qenums]

In addition, it amends 8588cf268f
where WidgetStyle got removed.

Change-Id: I4d72dd762a2f18ba8886360b3581b4ef19bf4c5e
Reviewed-by: hjk <hjk@qt.io>

src/libs/utils/pathchooser.h

@@ -46,7 +46,6 @@ class PathChooserPrivate;
 class QTCREATOR_UTILS_EXPORT PathChooser : public QWidget
 {
     Q_OBJECT
-    Q_ENUMS(Kind)
     Q_PROPERTY(QString path READ path WRITE setPath NOTIFY pathChanged DESIGNABLE true)
     Q_PROPERTY(QString promptDialogTitle READ promptDialogTitle WRITE setPromptDialogTitle DESIGNABLE true)
     Q_PROPERTY(QString promptDialogFilter READ promptDialogFilter WRITE setPromptDialogFilter DESIGNABLE true)
@@ -72,6 +71,7 @@ public:
         Command, // A command that may or may not exist at the time of selection (e.g. result of a build)
         Any
     };
+    Q_ENUM(Kind)
 
     // Default is <Directory>
     void setExpectedKind(Kind expected);