Remove generation of fernet key

Author: alexf

script/entrypoint.sh

@@ -7,16 +7,12 @@ POSTGRES_HOST="postgres"
 POSTGRES_PORT="5432"
 RABBITMQ_HOST="rabbitmq"
 RABBITMQ_CREDS="airflow:airflow"
-FERNET_KEY=$(python -c "from cryptography.fernet import Fernet; FERNET_KEY = Fernet.generate_key().decode(); print FERNET_KEY")
 
 # Load DAGs exemples (default: Yes)
 if [ "x$LOAD_EX" = "xn" ]; then
     sed -i "s/load_examples = True/load_examples = False/" "$AIRFLOW_HOME"/airflow.cfg
 fi
 
-# Generate Fernet key
-sed -i "s|\$FERNET_KEY|$FERNET_KEY|" "$AIRFLOW_HOME"/airflow.cfg
-
 # wait for DB
 if [ "$1" = "webserver" ] || [ "$1" = "worker" ] || [ "$1" = "scheduler" ] ; then
   i=0