fix: Remove symbol_msg substitution (#1525)

Because Elixir source code can contain `|`, the removed substitution
sometimes broke `lsp_document_symbols()`.

Example:

```
E5108: Error executing lua ...packer/start/telescope.nvim/lua/telescope/make_entry.lua:392: attempt to concatenate local 'symbol_name' (a nil value)
stack traceback:
        ...packer/start/telescope.nvim/lua/telescope/make_entry.lua:392: in function 'entry_maker'
        ...scope.nvim/lua/telescope/finders/async_static_finder.lua:17: in function 'new_table'
        ...acker/start/telescope.nvim/lua/telescope/builtin/lsp.lua:137: in function 'v'
        ...acker/start/telescope.nvim/lua/telescope/builtin/lsp.lua:500: in function 'v'
        ...cker/start/telescope.nvim/lua/telescope/builtin/init.lua:496: in function <...cker/start/telescope.nvim/lua/telescope/builtin/init.lua:467>
        ...ck/packer/start/telescope.nvim/lua/telescope/command.lua:179: in function 'run_command'
        ...ck/packer/start/telescope.nvim/lua/telescope/command.lua:241: in function 'load_command'
        [string ":lua"]:1: in main chunk
```

Closes #874

0 files changed, 0 insertions, 0 deletions