Removed lower priority example code from README

More attention to the best example (don't have a worse suggestion as a first code example as it might be simply copy-pasted and spread a worse pattern.

Author: kootenpv

README.rst

@@ -129,35 +129,6 @@ are just row data containers, you are still dealing with SQL which is
 represented by Models and SQLAlchemy core grammars. Besides if you don't like
 ORM at all, you can use GINO without ORM:
 
-.. code-block:: python
-
-    import sqlalchemy as sa
-
-    metadata = sa.MetaData()
-
-    user = sa.Table(
-        'users', metadata,
-        sa.Column('id', sa.BigInteger(), primary_key=True),
-        sa.Column('nickname', sa.Unicode()),
-    )
-
-
-    import gino
-
-    async def main():
-        e = await gino.create_engine('postgresql://localhost/gino')
-        users = await e.all(sa.select([user]))
-        print(users)
-        # prints something like this:
-        # [(1, 'fantix'), (2, 'fantix'), (3, 'fantix'), (5, 'fantix')]
-
-
-    import asyncio
-
-    asyncio.get_event_loop().run_until_complete(main())
-
-or a bit more GINO-ish:
-
 .. code-block:: python
 
     from gino import Gino