Core: Kill off Host_UpdateBreakPointView()

Uses wxWidgets event propagation to the parent window which then appropriately handles the breakpoint list updating.

Source/Core/DolphinWX/MainNoGUI.cpp

@@ -76,8 +76,6 @@ void Host_UpdateMainFrame()
 	updateMainFrameEvent.Set();
 }
 
-void Host_UpdateBreakPointView(){}
-
 void Host_GetRenderWindowSize(int& x, int& y, int& width, int& height)
 {
 	x = SConfig::GetInstance().m_LocalCoreStartupParameter.iRenderWindowXPos;