[clang-tools-extra] [clangd] Remove redundant symbol name from hierarchy item details (PR #170112)

[via cfe-commits]

timon-ul wrote:

Hi @ckandeler ,
the codechanges look simple and reasonable, but there is currently a merge conflict you would have to resolve (which does not look complicated). 

https://github.com/llvm/llvm-project/pull/170112