How do I get the latest version of my code?

I’m using Git 1.7.4.1.

I want to get the latest version of my code from the repository, but I’m getting errors:

$ git pull
….
M   selenium/ant/build.properties
….
M   selenium/scripts/linux/get_latest_updates.sh
M   selenium/scripts/windows/start-selenium.bat
Pull is not possible because you have unmerged files.
Please, fix them up in the work tree, and then use 'git add/rm <file>' as appropriate to mark resolution, or use 'git commit -a'.

I’ve deleted the local copies of the files the tool is complaining about, but I still get the errors.

How do I check out the latest version from the remote repository?