I wouldn't try to remove labels because they're extremely useful to have for future reference and can even be regarded as vital safety equipment, I kid you not.
Granted the labels may make the seat or stroller look visually cluttered or unappealing, but they likely have info. regarding the weight limits of the seat/stroller, their model numbers and dates of manufacture, as well as installation information, warnings, and pertinent instructions.
Any and all of this information is extremely important to follow and keep handy as a reference. In the event of a product recall, for example, you would need the serial number, model number and date of manufacture to determine if your seat or stroller are affected by the recall. You would also potentially need this info. if you ever need to order replacement parts, or need to exchange/return the items or lodge a formal complaint because of any problems. You'll also want the date of manufacture information to know when the carseat expires. Graco seats usually expire 6 years from their date of manufacture after which the seat should no longer be used because it could be unsafe. If you were to remove all of the labels and then want to sell or reuse the seat/stroller for another child, you'll need the info. to refresh your memory or help a new owner to use them properly. Some Child Passenger Safety Technicians may even go so far as to tell you your seat is unsafe without all of the proper labeling because they cannot verify the age or model of the seat to check for expiration or recalls if you have your seat inspected and it doesn't have labels on it.