Exclude simple_capsule_dtor from compilation as it's not used.
Exclude simple_capsule_dtor from compilation as it's not used.

jasonmccampbell/numpy-refactor-sprint,teoliphant/numpy-refactor,jasonmccampbell/numpy-refactor-sprint,teoliphant/numpy-refactor,jasonmccampbell/numpy-refactor-sprint,teoliphant/numpy-refactor,jasonmccampbell/numpy-refactor-sprint,teoliphant/numpy-refactor,teoliphant/numpy-refactor