Remove db migration for hedgedoc app

backend/migrations/versions/aee25ad6b0ae_add_hedgedoc_as_app.py

-"""empty message
-
-Revision ID: aee25ad6b0ae
-Revises: fc0892d07771
-Create Date: 2022-12-15 14:37:55.659132
-
-"""
-from alembic import op
-import sqlalchemy as sa
-
-
-# revision identifiers, used by Alembic.
-revision = 'aee25ad6b0ae'
-down_revision = 'fc0892d07771'
-branch_labels = None
-depends_on = None
-
-
-def upgrade():
-    # Add hedgedoc app
-    op.execute(f'INSERT IGNORE INTO app (`id`, `name`, `slug`) VALUES (8,"Hedgedoc","hedgedoc")')
-    op.execute(f'INSERT IGNORE INTO oauthclient_app (`oauthclient_id`, `app_id`) VALUES ("hedgedoc", 8)')
-
-def downgrade():
-    op.execute(f'DELETE FROM app WHERE id=8')
-    op.execute(f'DELETE FROM oauthclient_app WHERE app_id=8')