remove double constructor header (#24734)

docs/api/en/math/Interpolant.html

@@ -24,10 +24,6 @@
 		References:	[link:http://www.oodesign.com/template-method-pattern.html http://www.oodesign.com/template-method-pattern.html]
 		</p>
 
-
-		<h2>Constructor</h2>
-
-
 		<h2>Constructor</h2>
 
 		<h3>[name]( parameterPositions, sampleValues, sampleSize, resultBuffer )</h3>