How to remove line breaks that display after values of checkboxes in email

I am working on a site that has 8 products and the quote request form has a checkbox for each product so users can select which products they want to receive a quote for. I also have conditional logic in the form where a quantity input box appears under each product checkbox so users can enter how many of each product they want on the quote, these quantity input boxes display if the product checkbox is ticked.

The quantities and products that were selected display in the email that is sent to the client once the form has been submitted but a < br > displays for each product, even if the product wasn’t checked and the product name doesn’t display in the email.

An example
Products 1, 2, 4 and 7 were checked and quantities for each one was set to 1 in the form.
The list of products in the email looks like this:
1 Product 1
1 Product 2
[new line added for Product 3 that wasn’t checked]
1 Product 4
[new line added for Product 5 that wasn’t checked]
[new line added for Product 6 that wasn’t checked]
1 Product 7
[new line added for Product 8 that wasn’t checked]