🐛 Fix mode test

Because of vim-denops/deno-denops-test#15, now
tests is running with normal mode even on Vim.

Author: lambdalisue

function/various_test.ts

@@ -6,8 +6,8 @@ test({
   mode: "all",
   name: "mode()",
   fn: async (denops) => {
-    const shortMode = denops.meta.host === "vim" ? "c" : "n";
-    const longMode = denops.meta.host === "vim" ? "ce" : "n";
+    const shortMode = "n";
+    const longMode = "n";
     assertEquals(await various.mode(denops), shortMode);
     assertEquals(await various.mode(denops, 0), shortMode);
     assertEquals(await various.mode(denops, 1), longMode);