fix(linting): remove no-return-await rule (#33)

See https://github.com/goldbergyoni/nodebestpractices#-212-always-await-promises-before-returning-to-avoid-a-partial-stacktrace for reasoning

Author: erezrokah

.eslintrc.js

@@ -116,7 +116,6 @@ module.exports = {
     ],
     'no-plusplus': [2, { allowForLoopAfterthoughts: true }],
     'no-promise-executor-return': 2,
-    'no-return-await': 2,
     'no-shadow': 2,
     'no-underscore-dangle': [2, { enforceInMethodNames: true }],
     'no-undef': [2, { typeof: true }],