diff --git a/lua/cp/window.lua b/lua/cp/window.lua
index 767a6d4..3bf7e85 100644
--- a/lua/cp/window.lua
+++ b/lua/cp/window.lua
@@ -122,41 +122,6 @@ function M.restore_layout(state, tile_fn)
 	end
 end
 
----@param actual_output string
----@param expected_output string
----@param input_file string
-function M.setup_diff_layout(actual_output, expected_output, input_file)
-	vim.validate({
-		actual_output = { actual_output, "string" },
-		expected_output = { expected_output, "string" },
-		input_file = { input_file, "string" },
-	})
-
-	vim.cmd.diffoff()
-	vim.cmd("silent only")
-
-	local output_lines = vim.split(actual_output, "\n")
-	local output_buf = vim.api.nvim_create_buf(false, true)
-	vim.api.nvim_buf_set_lines(output_buf, 0, -1, false, output_lines)
-	vim.bo[output_buf].filetype = "cp"
-
-	vim.cmd.edit()
-	vim.api.nvim_set_current_buf(output_buf)
-	M.clearcol()
-	vim.cmd.diffthis()
-
-	vim.cmd.vsplit(expected_output)
-	vim.bo.filetype = "cp"
-	M.clearcol()
-	vim.cmd.diffthis()
-
-	vim.cmd.wincmd("h")
-	vim.cmd(("botright split %s"):format(input_file))
-	vim.bo.filetype = "cp"
-	M.clearcol()
-	vim.cmd(("resize %d"):format(math.floor(vim.o.lines * 0.3)))
-	vim.cmd.wincmd("k")
-end
 
 ---@param source_buf integer
 ---@param input_buf integer