=REPLACE(A1,1,n,"") - where n is the number of chars you want to remove, by @barry houdini is the most elegant method.

You can use MID(string,start,nn) - where nn is larger than the longest string and it will just use the remaining chars, or

MID(string,start,LEN(string) - which grabs the total length of the original string if you want to make sure.