fix unused vars and imports (#5852)

* update eslintrc, and fix most of the errors

* more

Signed-off-by: Jess Frazelle <github@jessfraz.com>

* fix last one

Signed-off-by: Jess Frazelle <github@jessfraz.com>

* fixes

Signed-off-by: Jess Frazelle <github@jessfraz.com>

* updates

Signed-off-by: Jess Frazelle <github@jessfraz.com>

* A snapshot a day keeps the bugs away! 📷🐛

---------

Signed-off-by: Jess Frazelle <github@jessfraz.com>
Co-authored-by: Jess Frazelle <github@jessfraz.com>
Co-authored-by: Jess Frazelle <jessfraz@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

.eslintrc

@@ -22,6 +22,13 @@
     "rules": {
       "@typescript-eslint/no-floating-promises": "error",
       "@typescript-eslint/no-misused-promises": "error",
+      "@typescript-eslint/no-unused-vars": ["error", {
+        "varsIgnorePattern": "^_",
+        "argsIgnorePattern": "^_",
+        "ignoreRestSiblings": true,
+        "vars": "all",
+        "args": "none"
+      }],
       "jsx-a11y/click-events-have-key-events": "off",
       "jsx-a11y/no-autofocus": "off",
       "jsx-a11y/no-noninteractive-element-interactions": "off",