remove extra member that wasn't being used.

widget/src/gtk/nsWindow.cpp

@@ -72,7 +72,6 @@ nsresult nsWindow::QueryInterface(const nsIID& aIID, void** aInstancePtr)
 nsWindow::nsWindow() 
 {
   NS_INIT_REFCNT();
-  strcpy(gInstanceClassName, "nsWindow");
   mFontMetrics = nsnull;
   mShell = nsnull;
   mVBox = nsnull;

widget/src/gtk/nsWindow.h

@@ -89,8 +89,6 @@ public:
   // in nsWidget now
   //    virtual  PRBool OnResize(nsSizeEvent &aEvent);
 
-    char gInstanceClassName[256];
-  
 protected:
 
   virtual void InitCallbacks(char * aName = nsnull);