update migrations script

migrations/versions/ef6a275f8079_.py

-"""empty message
+"""Add avatar table and conncect it to users
 
 Revision ID: ef6a275f8079
 Revises: 4820fa2e3ee2
@@ -9,7 +9,6 @@ from alembic import op
 import sqlalchemy as sa
 
 
-# revision identifiers, used by Alembic.
 revision = 'ef6a275f8079'
 down_revision = '4820fa2e3ee2'
 branch_labels = None
@@ -17,7 +16,6 @@ depends_on = None
 
 
 def upgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
     op.create_table('avatars',
     sa.Column('creation_date', sa.DateTime(), nullable=True),
     sa.Column('filename', sa.String(length=255), nullable=True),
@@ -27,10 +25,7 @@ def upgrade():
     sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
     sa.PrimaryKeyConstraint('id')
     )
-    # ### end Alembic commands ###
 
 
 def downgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
     op.drop_table('avatars')
-    # ### end Alembic commands ###