fix(src/library/task_queue): remove spurious message
fix(src/library/task_queue): remove spurious message

@gebner Could you please confirm this is a spurious message?

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