Remove explicit binding to an AWS API version. Used version is outdated.

cloudbridge/cloud/providers/aws/provider.py

@@ -117,9 +117,6 @@ class AWSCloudProvider(BaseCloudProvider):
         ec2_conn = boto.connect_ec2(
             aws_access_key_id=self.a_key,
             aws_secret_access_key=self.s_key,
-            # api_version is needed for availability
-            # zone support for EC2
-            api_version='2012-06-01' if self.cloud_type == 'aws' else None,
             is_secure=self.ec2_is_secure,
             region=region,
             port=self.ec2_port,
@@ -136,9 +133,6 @@ class AWSCloudProvider(BaseCloudProvider):
         vpc_conn = boto.connect_vpc(
             aws_access_key_id=self.a_key,
             aws_secret_access_key=self.s_key,
-            # api_version is needed for availability
-            # zone support for EC2
-            api_version='2012-06-01' if self.cloud_type == 'aws' else None,
             is_secure=self.ec2_is_secure,
             region=r,
             port=self.ec2_port,