@Patrick , depend on what LOV you are referring to. Some basic data you can set to Not Active or phase out etc to remove appearing on LOV. 

@AanHGTS, the question is how do i remove appearing on LOV.

Can you share a screenshot please? There are thousands of LOVs in the application. 
The values are most often derived from a basic data form, or an enumeration. 

I agree with all of the above, it would be nice to see the screen, 

If you're using the IEE client (not Aurena) we can always create a saved search within the LOV (see properties for the LOV).  The saved search can basically root out the records you do not wish to see. Then set that LOV to auto populate based on your saved search.   This would work for all LOV’s that I know of in IEE.  It may sound difficult, it’s pretty easy if you have done this one or twice.  

Different options would exist for Aurena and it would be nice to see the particular screen / LOV as we may have different options.  

Best regards,