**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
'apache-airflow-providers-hashicorp',
    'apache-airflow-providers-http',
    'apache-airflow-providers-imap',
    'apache-airflow-providers-jdbc',
    'apache-airflow-providers-jenkins',
    'apache-airflow-providers-jira',
    'apache-airflow-providers-microsoft-azure',
    'apache-airflow-providers-microsoft-mssql',
    'apache-airflow-providers-microsoft-winrm',
    'apache-airflow-providers-mongo',
    'apache-airflow-providers-mysql',
    'apache-airflow-providers-neo4j',
    'apache-airflow-providers-odbc',
    'apache-airflow-providers-openfaas',
    'apache-airflow-providers-opsgenie',
    'apache-airflow-providers-oracle',
    'apache-airflow-providers-pagerduty',
    'apache-airflow-providers-papermill',
    'apache-airflow-providers-plexus',
    'apache-airflow-providers-postgres',
    'apache-airflow-providers-presto',
    'apache-airflow-providers-qubole',
    'apache-airflow-providers-redis',
    'apache-airflow-providers-salesforce',
    'apache-airflow-providers-samba',
    'apache-airflow-providers-segment',
    'apache-airflow-providers-sendgrid',
    'apache-airflow-providers-sftp',
    'apache-airflow-providers-singularity',
    'apache-airflow-providers-slack',