chore: remove ejs and nodemon

neither is used now that we're using poi and building a static site with
it

packages/search-site/package.json

@@ -16,7 +16,6 @@
     "cjs": true
   },
   "dependencies": {
-    "ejs": "^2.6.1",
     "esm": "^3.0.82",
     "lunr": "^2.3.3",
     "mitt": "^1.1.3",
@@ -29,7 +28,6 @@
     "babel-eslint": "^9.0.0",
     "eslint-plugin-vue": "^4.7.1",
     "firebase-tools": "^4.2.1",
-    "nodemon": "^1.18.4",
     "poi": "^10.2.10"
   }
 }

yarn.lock

@@ -2859,10 +2859,6 @@ ee-first@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
 
-ejs@^2.6.1:
-  version "2.6.1"
-  resolved "https://registry.yarnpkg.com/ejs/-/ejs-2.6.1.tgz#498ec0d495655abc6f23cd61868d926464071aa0"
-
 electron-to-chromium@^1.2.7, electron-to-chromium@^1.3.62:
   version "1.3.64"
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.64.tgz#39f5a93bf84ab7e10cfbb7522ccfc3f1feb756cf"