fixed pip install command for cdk destroy

Author: briancaffey

gitlab-ci/aws/cdk.yml

@@ -100,8 +100,7 @@ cdk destroy:
     - apt-get -qq update && apt-get -y install nodejs npm
     - node -v
     - npm i -g aws-cdk
-    - pip3 install awscli
-    - pip3 install -r requirements.txt
+    - pip3 install -e awscdk
   script:
     - aws s3 rb --force s3://${ENVIRONMENT}-${APP_NAME}-frontend
     - aws s3 rb --force s3://${ENVIRONMENT}-${APP_NAME}-assets