Reports a redundant usage of await, such as await await, or awaiting a non-promise result.

When the 'Report for promises' option is selected, suggests removing await before promises when applicable (in return statements, and with Promise.resolve/reject).

Removing await in such contexts causes two problems.

Surrounding your code with try-catch and forgetting to add await will change code semantics while you may fail to notice that.
Having an explicit await may prevent the V8 runtime from providing async stack traces.