simplify

I'd prefer to get rid of the StyleInput versions of INPUTMAPPER
calls, and just pass in GameInputs and leave conversion to the
users (which aren't many).  The MultiPlayer hack makes this
hard, though, where we pass in the MultiPlayer to check; that
affects the underlying DeviceInput that's constructed.

stepmania/src/Player.cpp

@@ -1007,7 +1007,7 @@ void Player::Step( int col, int row, const RageTimer &tm, bool bHeld, bool bRele
 			for( int t=0; t<m_NoteData.GetNumTracks(); t++ )
 			{
 				const GameInput GameI = GAMESTATE->GetCurrentStyle()->StyleInputToGameInput( t, pn );
-				const float fSecsHeld = INPUTMAPPER->GetSecsHeld( GameI );
+				const float fSecsHeld = INPUTMAPPER->GetSecsHeld( t, pn );
 				if( fSecsHeld > 0  && fSecsHeld < JUMP_WINDOW_SECONDS )
 					iNumTracksHeld++;
 			}