Sometimes when settings up new frameworks and tools you may setup environment variables incorrectly, I know it has happened to me :(

But removing then can be a pain if it is your first time.

cd /Users/sonarsystems (or wherever your user is)
touch .bash_profile
open .bash_profile

In the file that opens add the following command
unset VARIABLE_NAME

save the file

then run the following command
source /Users/sonarsystems/.bash_profile (or wherever your user is)