They do identify vaccine sensitive individuals. This is already part of standard medical procedure and has been so for decades.

Also what counts as a toxin? They don't add chemicals to vaccines for giggles. Every ingredient has a purpose, and removing one would have negative health consequences.

Chlorine is bad for you, so we took all of it out of your table salt. Enjoy pure Sodium. Oh wait, pure sodium is really really bad for you. Lets go to the other direction, take the sodium out of your salt. Wait, chlorine is really really bad for you. Funny thing is, those two together aren't bad. I mean there's such as a thing as 'too much salt' but its not near the level of problems with ingesting raw chlorine or raw sodium. Chemistry is complicated, it turns out. Biochemistry doubly so.

"Remove toxins"
Hah, real funny.
Like trying to remove water from a desert.