No need for open lustrec_math inside simulink_math_fcn. It creates an error...

No need for open lustrec_math inside simulink_math_fcn. It creates an error when they are both imported in the same lustre file.

include/simulink_math_fcn.lusi

-#open <lustrec_math>
 function rem_int (x,y: int) returns (z: int) prototype C;
 function rem_real (x,y: real) returns (z: real) prototype C;
 function mod_int (x,y: int) returns (z: int) prototype C;