Oven cleaner will remover Anodizing providing the( "um" ) ( Microns) "thickness of the anodizing" isnt too thick, the higher the microns the longer it will take to remove, But most parts that i have bought for my cars that have been Anodized have very low microns and is quite easy to remove.

note that just using Sulphuric acid to Anodize without it containing high levels of Aluminium will take longer and give a poor result and uneven coating of the parts ....

Ideal acid level content 140-180 grams per ltr
Ideal Aluminium content in the acid 8- 15 grams per ltr