If your data's "10 rows" is always known and the same you could use a ReplaceText to get only 11+ rows. You would match that text, and not replace it, just take the rest.
If the first 10 rows are just ignored and of the same structure as all rows, ie not some prepending lines with headers, etc; you could also use a CSV Reader and program your flow to simply ignore the first 10 flow files.
Thanks @steven-matison for the reply. can you please explain your solution, I'm not much clear on this. my first 10 rows are known and those are always needs to be omitted and continue from 10th row. Can you explain me of how would I setup the ReplaceText processor to fulfil my requirement