s3: Clean up some excessive blank lines

Author: akkornel

cloud/s3.md

@@ -533,7 +533,6 @@ Within a minute or two of you saving changes, they will take effect.  As long
 as the Stanford Globus user has finished the IAM configuration on their end,
 they will now be able to access your bucket.
 
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 ## Loading Credentials into Globus
 
 With an IAM User created, you can now upload your credentials to Globus.
@@ -739,7 +738,3 @@ field.
 
 When you press the Enter key, Globus will attempt to access the bucket.  If
 your permissions are correct, you will see a file listing.
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