cleanup: Remove debugging commands

Not really used anymore

lua/symbols-outline/debug.lua

@@ -1,22 +0,0 @@
-local vim = vim
-
-local D = {}
-
--- needs plenary
-local reload = require('plenary.reload').reload_module
-
-function D.R(name)
-    reload(name)
-    return require(name)
-end
-
-function D.setup_commands()
-    vim.cmd("command! " .. "DSymbolsOutline " ..
-                ":lua require'symbols-outline.debug'.R('symbols-outline').toggle_outline()")
-    vim.cmd("command! " .. "DSymbolsOutlineOpen " ..
-                ":lua require'symbols-outline.debug'.R('symbols-outline').open_outline()")
-    vim.cmd("command! " .. "DSymbolsOutlineClose " ..
-                ":lua require'symbols-outline.debug'.R('symbols-outline').close_outline()")
-end
-
-return D