autotools: minor cleanup

Change-Id: Ic7862a4a97e60ed016a53f5893e03e3f9ec11e53
Reviewed-by: Patricia Santana Cruz <patriciasc@openismus.com>
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/autotoolsprojectmanager/makefileparserthread.h

@@ -57,7 +57,6 @@ class MakefileParserThread : public QThread
 
 public:
     MakefileParserThread(const QString &makefile);
-    ~MakefileParserThread();
 
     /** @see QThread::run() */
     void run();