Bulk import cleanup (ansible-collections#360)

* Split imports and reorder
* Import camel_dict_to_snake_dict and snake_dict_to_camel_dict direct from ansible.module_utils.common.dict_transformations
* Remove unused imports
* Route53 Info was migrated to Boto3 drop the HAS_BOTO check and import
* changelog

This commit was initially merged in https://github.com/ansible-collections/community.aws
See: ansible-collections/community.aws@130cf3c

plugins/modules/iam_user_info.py

@@ -101,15 +101,16 @@
             sample: "test_user"
 '''
 
-from ansible_collections.amazon.aws.plugins.module_utils.core import AnsibleAWSModule
-from ansible_collections.amazon.aws.plugins.module_utils.ec2 import camel_dict_to_snake_dict, AWSRetry
-
 try:
-    import botocore
     from botocore.exceptions import BotoCoreError, ClientError
 except ImportError:
     pass  # caught by AnsibleAWSModule
 
+from ansible.module_utils.common.dict_transformations import camel_dict_to_snake_dict
+
+from ansible_collections.amazon.aws.plugins.module_utils.core import AnsibleAWSModule
+from ansible_collections.amazon.aws.plugins.module_utils.ec2 import AWSRetry
+
 
 @AWSRetry.exponential_backoff()
 def list_iam_users_with_backoff(client, operation, **kwargs):