I\'m trying to work with android studio, and so far so good. However, it has yellow indexes, warnings, lightbulbs, (etc) all over the place!
Which is a problem. No,
The latest version of Android Studio (2.1) seems to have a lot more flexibility with its warnings. Settings -> Editor -> Inspections has increased greatly. Then use the search feature to help find the warnings/errors you want to dis(en)able. Then click the checkboxes for the settings you like.
Don't forget to choose "Default" or "Project Default" in the drop-down box.
In this image I managed to find your specific issue (I completely agree with you about that one!) which I unchecked.