simplify

(this stuff looks like overzealous abstraction, but I think most of it used to
be more complicated code that was moved off into other classes, and the
stubs were left behind)

stepmania/src/ScreenPlayerOptions.cpp

@@ -115,7 +115,7 @@ void ScreenPlayerOptions::Input( const InputEventPlus &input )
 			vector<PlayerNumber> v;
 			v.push_back( pn );
 			this->ImportOptions( r, v );
-			this->PositionUnderlines( r, pn );
+			m_pRows[r]->PositionUnderlines( pn );
 			this->UpdateDisqualified( r, pn );
 		}
 	}