如何关闭合并期间未关闭的合并分支？

How to close merged branches which were not close during merge?

我并不总是在 Bitbucket 拉取请求中选择选项 "close branch after merge"。因此我在合并选项卡中有很多分支。我怎样才能关闭它们？

"delete" 与合并分支的 "close" 相同吗？如果不是有什么区别？

是的，删除它们即可。

That is what happens when you use the "close branch after merging" option.