refactor(config): Remove redundant options to align with schemastore …

…defaults

Also fixes the regression introduced in 1d657db
that the standard prettier config omits `"trailingComma": "none"` and
got an extraneous printWidth option.

templates/_prettierrc.json.ejs

@@ -1,28 +1,16 @@
 <%_ if (styleGuide === 'airbnb') { _%>
 {
   "$schema": "https://json.schemastore.org/prettierrc",
-  "arrowParens": "always",
-  "bracketSameLine": false,
-  "bracketSpacing": true,
-  "endOfLine": "lf",
-  "jsxSingleQuote": false,
   "printWidth": 100,
-  "proseWrap": "preserve",
-  "quoteProps": "as-needed",
-  "semi": true,
-  "singleQuote": true,
-  "tabWidth": 2,
-  "trailingComma": "all",
-  "useTabs": false
+  "singleQuote": true
 }
 <%_ } else if (styleGuide === 'standard') { _%>
 {
   "$schema": "https://json.schemastore.org/prettierrc",
   "semi": false,
-  "tabWidth": 2,
   "singleQuote": true,
-  "printWidth": 100,
-  "trailingComma": "all"
+  "jsxSingleQuote": true,
+  "trailingComma": "none"
 }
 <%_ } else { _%>
 <%#