Revert "BBox: Always offset the top border by the same amount"

This reverts commit 39899cf662.

Checked with BeOS R5, and this is not how it works, to remain
compatable we need to go back to how this was before.

headers/os/interface/Box.h

@@ -63,7 +63,6 @@ class BBox : public BView {
 		virtual	void		ResizeToPreferred();
 		virtual	void		GetPreferredSize(float* _width, float* _height);
 		virtual	void		MakeFocus(bool focused = true);
-		virtual	void		SetFont(const BFont* font, uint32 mask = B_FONT_ALL);
 		virtual	status_t	GetSupportedSuites(BMessage* message);
 
 		virtual	status_t	Perform(perform_code d, void* arg);
@@ -97,7 +96,6 @@ class BBox : public BView {
 		border_style		fStyle;
 		BView*				fLabelView;
 		LayoutData*			fLayoutData;
-		float				fLabelHeight;
 };
 
 #endif	// _BOX_H