chore(builtin/basic): remove unnecessary parentheses
chore(builtin/basic): remove unnecessary parentheses

Signed-off-by: Leonardo de Moura <7610bae85f2b530654cc716772f1fe653373e892@microsoft.com>

fpvandoorn/lean,sp3ctum/lean,soonhokong/lean-osx,leodemoura/lean,soonhokong/lean,leodemoura/lean,fgdorais/lean,leanprover/lean,soonhokong/lean,UlrikBuchholtz/lean,leanprover-community/lean,codyroux/lean0.1,levnach/lean,soonhokong/lean,leanprover-community/lean,c-cube/lean,digama0/lean,fpvandoorn/lean,javra/lean,UlrikBuchholtz/lean,johoelzl/lean,digama0/lean,dselsam/lean,eigengrau/lean,johoelzl/lean,dselsam/lean,soonhokong/lean-osx,avigad/lean,fpvandoorn/lean,fpvandoorn/lean2,htzh/lean,fpvandoorn/lean,fgdorais/lean,soonhokong/lean-osx,avigad/lean,dselsam/lean,leanprover-community/lean,soonhokong/lean-osx,leanprover/lean,leanprover/lean,sp3ctum/lean,eigengrau/lean,soonhokong/travis_test,soonhokong/lean,digama0/lean,digama0/lean,htzh/lean,htzh/lean,codyroux/lean0.1,c-cube/lean,fpvandoorn/lean,avigad/lean,soonhokong/lean,levnach/lean,avigad/lean,soonhokong/lean-windows,soonhokong/lean-windows,avigad/lean,johoelzl/lean,UlrikBuchholtz/lean,leodemoura/lean,UlrikBuchholtz/lean,levnach/lean,codyroux/lean0.1,Kha/lean,fgdorais/lean,javra/lean,fpvandoorn/lean2,leanprover-community/lean,johoelzl/lean,rlewis1988/lean,levnach/lean,fgdorais/lean,eigengrau/lean,sp3ctum/lean,sp3ctum/lean,Kha/lean,c-cube/lean,javra/lean,soonhokong/travis_test,sp3ctum/lean,rlewis1988/lean,fpvandoorn/lean2,leodemoura/lean,leanprover-community/lean,fgdorais/lean,dselsam/lean,johoelzl/lean,soonhokong/lean-windows,leanprover-community/lean,leanprover/lean,javra/lean,fpvandoorn/lean2,dselsam/lean,c-cube/lean,Kha/lean,fpvandoorn/lean,digama0/lean,digama0/lean,leanprover/lean,eigengrau/lean,avigad/lean,soonhokong/travis_test,rlewis1988/lean,Kha/lean,johoelzl/lean,javra/lean,dselsam/lean,UlrikBuchholtz/lean,c-cube/lean,leodemoura/lean,Kha/lean,rlewis1988/lean,codyroux/lean0.1,leodemoura/lean,leanprover/lean,rlewis1988/lean,fpvandoorn/lean2,soonhokong/lean-windows,fgdorais/lean,Kha/lean,soonhokong/lean-windows,htzh/lean,htzh/lean,soonhokong/lean-osx,eigengrau/lean,levnach/lean,soonhokong/travis_test,rlewis1988/lean