Fixed unnecessary virtual declarations in classes without inheritance (only...

Fixed unnecessary virtual declarations in classes without inheritance (only detected by the SLC5 compiler).

castor/tape/tapeserver/daemon/DiskReadTask.hpp

@@ -45,7 +45,7 @@ public:
           tape::tapegateway::FileToMigrateStruct* file,size_t numberOfBlock,
           castor::tape::threading::AtomicFlag& errorFlag);
   
-  virtual void execute(log::LogContext& lc);
+  void execute(log::LogContext& lc);
 private:
   void hasAnotherTaskTailed() const {
     //if a task has signaled an error, we stop our job

castor/tape/tapeserver/daemon/DiskReadThreadPool.hpp

@@ -77,7 +77,7 @@ public:
    * with finish() as the task injection is done from a single thread (the task
    * injector)
    */
-  virtual void push(DiskReadTask *task);
+  void push(DiskReadTask *task);
   
   /**
    * Injects as many "end" tasks as there are threads in the thread pool.

castor/tape/tapeserver/daemon/DiskWriteThreadPool.hpp

@@ -49,7 +49,7 @@ public:
   
   void startThreads();
   void waitThreads();
-  virtual void push(DiskWriteTask *t);
+  void push(DiskWriteTask *t);
   void finish();
 
 private: