shell - How to remove special character  character in a file in unix?

Below is the data in my file:

one_1.10=to - Standard (£1.10)
ITV_1.10=to - Standard (£1.10)

I want to remove  in my file in unix?

i tried below methods. Opened the file in vi mode and gave below commands

:set nobomb
:wq

sed -i '1 s/^\xef\xbb\xbf//' 

But the BOM character is not getting removed. Could someone please help?