HADOOP-14314. The OpenSolaris taxonomy link is dead in InterfaceClassification.md. Contributed by Rui Gao.

(cherry picked from commit bed8cb6979e0460141ed77e3b15d4f18db098a8e)

hadoop-common-project/hadoop-common/src/site/markdown/InterfaceClassification.md

@@ -35,10 +35,9 @@ Interface Classification
 ------------------------
 
 Hadoop adopts the following interface classification,
-this classification was derived from the
-[OpenSolaris taxonomy](http://www.opensolaris.org/os/community/arc/policies/interface-taxonomy/#Advice)
-and, to some extent, from taxonomy used inside Yahoo.
-Interfaces have two main attributes: Audience and Stability
+this classification was derived from the OpenSolaris taxonomy and, to some extent,
+from taxonomy used inside Yahoo.
+Interfaces have two main attributes: Audience and Stability.
 
 ### Audience