fix sanity ERROR: plugins/inventory/aws_ec2.py unparsable-with-libyam…

…l: expected a single document in the stream - but found another document

plugins/inventory/aws_ec2.py

@@ -192,8 +192,6 @@
 # Returns all the hostnames for a given instance
 allow_duplicated_hosts: false
 
----
-
 # Example using constructed features to create groups and set ansible_host
 plugin: amazon.aws.aws_ec2
 regions:
@@ -230,8 +228,6 @@
   # (note: this does not modify inventory_hostname, which is set via I(hostnames))
   ansible_host: private_ip_address
 
----
-
 # Example using include_filters and exclude_filters to compose the inventory.
 plugin: amazon.aws.aws_ec2
 regions:
@@ -246,8 +242,6 @@
   - tag:Name:
       - 'my_first_tag'
 
----
-
 # Example using groups to assign the running hosts to a group based on vpc_id
 plugin: amazon.aws.aws_ec2
 profile: aws_profile
@@ -265,7 +259,6 @@
 groups:
   libvpc: vpc_id == 'vpc-####'
 
----
 
 # Define prefix and suffix for host variables coming from AWS.
 plugin: amazon.aws.aws_ec2