Fix flake8 error

Author: acsany

build-a-rest-api-frontend/source_code_final/init_database.py

@@ -1,6 +1,5 @@
 from datetime import datetime
 from sqlalchemy.exc import OperationalError
-from sqlalchemy.ext.serializer import loads, dumps
 
 from config import app, db
 from models import Note, Person

build-a-rest-api-frontend/source_code_start/init_database.py

@@ -1,6 +1,5 @@
 from datetime import datetime
 from sqlalchemy.exc import OperationalError
-from sqlalchemy.ext.serializer import loads, dumps
 
 from config import app, db
 from models import Note, Person

build-a-rest-api-frontend/source_code_step_1/init_database.py

@@ -1,6 +1,5 @@
 from datetime import datetime
 from sqlalchemy.exc import OperationalError
-from sqlalchemy.ext.serializer import loads, dumps
 
 from config import app, db
 from models import Note, Person

build-a-rest-api-frontend/source_code_step_2/init_database.py

@@ -1,6 +1,5 @@
 from datetime import datetime
 from sqlalchemy.exc import OperationalError
-from sqlalchemy.ext.serializer import loads, dumps
 
 from config import app, db
 from models import Note, Person

build-a-rest-api-frontend/source_code_step_3/init_database.py

@@ -1,6 +1,5 @@
 from datetime import datetime
 from sqlalchemy.exc import OperationalError
-from sqlalchemy.ext.serializer import loads, dumps
 
 from config import app, db
 from models import Note, Person

build-a-rest-api-frontend/source_code_step_4/init_database.py

@@ -1,6 +1,5 @@
 from datetime import datetime
 from sqlalchemy.exc import OperationalError
-from sqlalchemy.ext.serializer import loads, dumps
 
 from config import app, db
 from models import Note, Person

build-a-rest-api-frontend/source_code_step_5/init_database.py

@@ -1,6 +1,5 @@
 from datetime import datetime
 from sqlalchemy.exc import OperationalError
-from sqlalchemy.ext.serializer import loads, dumps
 
 from config import app, db
 from models import Note, Person