Fixed some bash if blocks and removed env file from db.py

scripts/aws_change_ownership.sh

@@ -6,7 +6,6 @@ then
  	echo "Chown application to be owned by notify-app"
 	cd /home/notify-app/;
 	chown -R notify-app:govuk-notify-applications notifications-api
-fi
 else
 	echo "Chown application to be owned by ubuntu"
 	cd /home/ubuntu/;

scripts/aws_install_dependencies.sh

@@ -7,7 +7,6 @@ then
 	cd /home/ubuntu/notifications-api;
 	pip3 install -r /home/notify-app/notifications-api/requirements.txt
 	python3 db.py db upgrade
-fi
 else
  	echo "Depenencies for ubuntu"
 	cd /home/ubuntu/notifications-api;