Azure Function: avoid error about context.done()

An Azure Function is supposed to either return a `Promise` or call
`context.done()`, otherwise the following error will be shown:

  [Error]   Error: Choose either to return a promise or call 'done'. Do
  not use both in your script. Learn more:
  https://go.microsoft.com/fwlink/?linkid=2097909

Since we do prefer to return a `Promise`, let's just skip the call to
`context.done()`.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

GitGitGadget/index.js

@@ -137,6 +137,4 @@ module.exports = async (context, req) => {
             body: `Caught an error: ${e.message || JSON.stringify(e, null, 2)}`,
         };
     }
-
-    context.done();
 };