Remove pylint from null-ls

Due to a bug in pylint it is currently not possible to ignore files
while linting from stdin. This leads to a lot of diagnostics being
displayed in ignored files.
(pylint-dev/pylint#4354)

dotfiles/nvim/.config/nvim/lua/lsp/b-null-ls.lua

@@ -46,9 +46,6 @@ local sources = {
 			}
 		end,
 	}),
-	null_ls.builtins.diagnostics.pylint.with({
-		condition = create_condition("pylint.master"),
-	}),
 }
 
 local augroup = vim.api.nvim_create_augroup("LspFormatting", {})