**Apache Airflow version**:
2.0.2

**Kubernetes version (if you are using kubernetes)** (use `kubectl version`):
v1.18.18

**Environment**:
Cloud provider or hardware configuration: AWS


**What happened**:

Updated to Airflow 2.0.2 and a new warning appeared in webserver logs:
```
WARNING - Exception when importing 'airflow.providers.google.common.hooks.leveldb.LevelDBHook' from 'apache-airflow-providers-google' package: No module named 'airflow.providers.google.common.hooks.leveldb'
```

**What you expected to happen**:
No warning.

**How to reproduce it**:
Don't know the specific details. Have tried adding `pip install --upgrade apache-airflow-providers-google` but the error was still there.

**Anything else we need to know**:
I am not using LevelDB for anything in my code, as a result I don't understand from where this error is coming.
tests/core/test_providers_manager.py
'extra__google_cloud_platform__key_path',
    'extra__google_cloud_platform__keyfile_dict',
    'extra__google_cloud_platform__num_retries',
    'extra__google_cloud_platform__project',
    'extra__google_cloud_platform__scope',
    'extra__grpc__auth_type',
    'extra__grpc__credential_pem_file',
    'extra__grpc__scopes',
    'extra__jdbc__drv_clsname',
    'extra__jdbc__drv_path',
    'extra__kubernetes__in_cluster',
    'extra__kubernetes__kube_config',
    'extra__kubernetes__kube_config_path',
    'extra__kubernetes__namespace',
    'extra__snowflake__account',
    'extra__snowflake__aws_access_key_id',
    'extra__snowflake__aws_secret_access_key',
    'extra__snowflake__database',
    'extra__snowflake__region',
    'extra__snowflake__warehouse',
    'extra__wasb__connection_string',
    'extra__wasb__sas_token',
    'extra__wasb__shared_access_key',
    'extra__wasb__tenant_id',
    'extra__yandexcloud__folder_id',
    'extra__yandexcloud__oauth',
    'extra__yandexcloud__public_ssh_key',
    'extra__yandexcloud__service_account_json',
    'extra__yandexcloud__service_account_json_path',
]