Ho to remove the //n from the string

i have the below string which was in many lines i need completely in one line i was getting data from excel cell can any one help me

Recently our Distribution lists are not automatically updated ( for the past 2 months)
I have to contact ITTICS support for every new joiners or transfers.
Could you please fix this issue for the future?

find starter help here:
Excel_LinebreakDemo.xaml (6.4 KB)
LinebreakDemo.xlsx (8.3 KB)