How to exclude impl of CL_MMH1 include str in MGA00001 user exit

Hi ,

   The user exit MGA00001 containts a function exit and an include structure . I just want to use the function exit in MGA00001 and not the include CI_MMH1. Now since i just double clicked once on the include out of curosity to check , i am not able to exclude the implementation of CL_MMH1.

  Is it really mandatory to implement CL_MMH1 structure also if I just want to use the function exit.

If it is , shall i just create a dummy field in the structure and activate it??, Please let me know on this.