chore: .gitignore spring cleaning (denoland#18644)

.gitignore

@@ -8,25 +8,13 @@
 /.vs/
 /.vscode/
 gclient_config.py_entries
-/gh-pages/
 /target/
 /std/hash/_wasm/target
 /tools/wpt/manifest.json
 /test_napi/node_modules
 /test_napi/build
 /test_napi/third_party_tests/node_modules
 
-# Files that help ensure VSCode can work but we don't want checked into the
-# repo
-/node_modules
-/tsconfig.json
-
-# compiled wasm files
-std/wasi/testdata/snapshot_preview1/
-
-# generated v8 coverage files
-cli/tests/.test_coverage/
-
 # MacOS generated files
 .DS_Store
 .DS_Store?