Remove some extra blank lines

Author: madsen

Changes

@@ -44,7 +44,6 @@ Changelog for HTML-Tree
     * Attribute names are now validated in as_XML and invalid names will
       cause an error.
 
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     [FIXES]
     * Optionally empty tags with content now have close tag. (RT #49932 #41806)
     * Added attribute name validation. (RT #23439)
@@ -293,7 +292,6 @@ Changelog for HTML-Tree
    Also added a few tweaks to do better with XHTML parsing.
    Added guts() and disembowel() methods, for parsing document fragments.
 
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    TODO: desperately need to add tests to t/