refactor(frontends/smt2): remove legacy type context
refactor(frontends/smt2): remove legacy type context

fgdorais/lean,soonhokong/lean-osx,leodemoura/lean,dselsam/lean,avigad/lean,dselsam/lean,fgdorais/lean,soonhokong/lean-osx,leanprover-community/lean,leanprover/lean,avigad/lean,johoelzl/lean,avigad/lean,fpvandoorn/lean,johoelzl/lean,digama0/lean,Kha/lean,leodemoura/lean,rlewis1988/lean,leodemoura/lean,fgdorais/lean,soonhokong/lean-windows,leanprover-community/lean,soonhokong/lean-osx,rlewis1988/lean,digama0/lean,leodemoura/lean,Kha/lean,fgdorais/lean,rlewis1988/lean,leodemoura/lean,fgdorais/lean,Kha/lean,digama0/lean,soonhokong/lean-osx,soonhokong/lean-windows,leanprover-community/lean,johoelzl/lean,dselsam/lean,soonhokong/lean-windows,johoelzl/lean,leanprover-community/lean,leodemoura/lean,johoelzl/lean,leanprover-community/lean,digama0/lean,johoelzl/lean,leanprover/lean,soonhokong/lean-windows,fpvandoorn/lean,digama0/lean,rlewis1988/lean,dselsam/lean,dselsam/lean,rlewis1988/lean,fgdorais/lean,Kha/lean,Kha/lean,leanprover/lean,avigad/lean,leanprover/lean,fpvandoorn/lean,fpvandoorn/lean,dselsam/lean,digama0/lean,avigad/lean,soonhokong/lean-windows,Kha/lean,leanprover/lean,rlewis1988/lean,leanprover/lean,soonhokong/lean-osx,leanprover-community/lean,fpvandoorn/lean,avigad/lean,fpvandoorn/lean