Spring Remove convention-based annotation attribute override support

This is a follow up to #28760.

Comment From: jhoeller

@sbrannen given the amount of other changes in 6.1 with a potential for subtle upgrade issues, I'm inclined to remove the convention-based attribute support in 6.2 instead, along with #30608.

Comment From: jhoeller

We intend to remove convention-based annotation attribute override support in 7.0 now.