No need to test the same thing twice.

Related to #498.

Author: waylan

tests/extensions/attr_list.html

@@ -64,7 +64,6 @@ <h1>Bad attributes</h1>
 <p>No <em>key or value</em></p>
 <p><em>Weirdness</em></p>
 <p><em>More weirdness</em></p>
-<p>This should not cause a <em foo="a=b">crash</em></p>
+<p>This should not cause a <em foo="a">crash</em></p>
 <p>Attr_lists do not contain <em>newlines</em>{ foo=bar
-key=value }</p>
-<p>Extra <em foo="bar">equals signs</em></p>
+key=value }</p>

tests/extensions/attr_list.txt

@@ -92,5 +92,3 @@ This should not cause a *crash*{ foo=a=b }
 
 Attr_lists do not contain *newlines*{ foo=bar
 key=value }
-
-Extra *equals signs*{ foo=bar=baz }