I would say:
"I wish to withdraw my application to the company mentioned on my form".
If I was being more formal I'd name the company instead of alluding to it:
"I wish to withdraw my application to Xerox."
You might also add:
"Please refer to details in my form."
"Withdraw" is not used in all cases, it indicates pulling back something you have presented forward, often formal documents, verbal offers. "I'm withdrawing my offer to buy your house." "Withdraw" can also be more literal as in moving yourself out of a situation. To be a "withdrawn" person is to be shy and rarely reach out to others.
In a technical field you might "roll back" a computer transaction to a previous state, or in finance you would "cancel" a payment.