Remove unneeded defines.

Mostly Q_DISABLE_COPY that were covered by the un-copy-ability of the
respective base classes. Includes a few "stylistic" whitespace changes.

Change-Id: I31ca0e7bada5ed0f34776976efe22ddc444a5bf2
Reviewed-on: http://codereview.qt.nokia.com/1609
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/texteditor/snippets/snippetscollection.h

@@ -104,7 +104,6 @@ private slots:
 
 private:
     SnippetsCollection();
-    Q_DISABLE_COPY(SnippetsCollection)
 
     int groupIndex(const QString &groupId) const;
     bool isGroupKnown(const QString &groupId) const;