fix: remove sqlalchemy as a supported dialect from docs (#714)

Author: karenc-bq

aws_advanced_python_wrapper/driver_dialect_codes.py

@@ -13,7 +13,6 @@
 #  limitations under the License.
 
 class DriverDialectCodes:
-    SQLALCHEMY = "sqlalchemy"
     PSYCOPG = "psycopg"
     MYSQL_CONNECTOR_PYTHON = "mysql-connector-python"
     GENERIC = "generic"

docs/using-the-python-driver/DriverDialects.md

@@ -26,7 +26,6 @@ Driver Dialect codes specify which driver dialect class to use.
 |--------------------------|--------------------------|
 | `PSYCOPG`                | `psycopg`                |
 | `MYSQL_CONNECTOR_PYTHON` | `mysql-connector-python` |
-| `SQLALCHEMY`             | `sqlalchemy`             |
 | `GENERIC`                | `generic`                |
 
 ## Custom Driver Dialects