Remove useless cpp's

Those files are empty or almost empty, put remaining stuff in header if
necessary.
diff --git a/parameter/AutoLock.h b/parameter/AutoLock.h
index d3a0625..ab24a94 100644
--- a/parameter/AutoLock.h
+++ b/parameter/AutoLock.h
@@ -34,8 +34,15 @@
 class CAutoLock
 {
 public:
-    CAutoLock(pthread_mutex_t* pMutex);
-    ~CAutoLock();
+    CAutoLock(pthread_mutex_t* pMutex) : _pMutex(pMutex)
+    {
+         pthread_mutex_lock(_pMutex);
+    }
+
+    ~CAutoLock()
+    {
+        pthread_mutex_unlock(_pMutex);
+    }
 
 private:
     pthread_mutex_t* _pMutex;