Only after using sudo python ./awslogs-agent-setup.py --region us-east-1 on my Amazon Linux AMI, I found this tidbyte of Caution from AWS docs:
sudo python ./awslogs-agent-setup.py --region us-east-1
There is another work-around for removing the Cloudwatch agent permanently. If you installed the package using rpm, we can use yum or apt-get to remove the package permanently.
rpm
yum
apt-get
sudo yum remove amazon-cloudwatch-agent -y
or
sudo apt-get remove amazon-cloudwatch-agent -y