remove .gitignore file from FitNesseRoot.
remove .gitignore file from FitNesseRoot.

amolenaar/fitnesse,amolenaar/fitnesse,jdufner/fitnesse,rbevers/fitnesse,jdufner/fitnesse,jdufner/fitnesse,hansjoachim/fitnesse,hansjoachim/fitnesse,amolenaar/fitnesse,hansjoachim/fitnesse,rbevers/fitnesse,rbevers/fitnesse