Remove some dead code and address various compiler warnings

[monnier]

I pushed to the scratch/ergoemacs-mode branch of elpa.git a patch which cleans up some of the code by removing some dead code and addressing several compiler warnings.

You can get that branch with

git remote add -ft scratch/ergoemacs-mode elpa git://git.sv.gnu.org/emacs/elpa.git

[mattfidler]

I added a pull request for this in #525

It didn't pass the tests in ergoemacs-test(). I will have to see what the issues are.

[mattfidler]

Thanks; Fixed tests, and now merged in!