fix assert on ABC sections

stepmania/src/ScreenSelectMusic.cpp

@@ -1556,9 +1556,7 @@ void ScreenSelectMusic::AfterMusicChange()
 			switch( m_MusicWheel.GetSelectedType() )
 			{
 			case TYPE_SECTION:
-				// Ugly:
-				if( sGroup != "- EMPTY -" )
-					g_sBannerPath = SONGMAN->GetSongGroupBannerPath( sGroup );
+				g_sBannerPath = SONGMAN->GetSongGroupBannerPath( sGroup );
 				m_sSampleMusicToPlay = m_sSectionMusicPath;
 				break;
 			case TYPE_SORT:

stepmania/src/SongManager.cpp

@@ -323,7 +323,6 @@ CString SongManager::GetSongGroupBannerPath( CString sSongGroup )
 			return m_sSongGroupBannerPaths[i];
 	}
 
-	ASSERT_M( 0, ssprintf("requested banner for song group '%s' that doesn't exist",sSongGroup.c_str()) );
 	return "";
 }