Remove an inaccurate javadoc reference, which referred to an artifact from an earlier draft version of the Extensions API.
This is https://github.com/google/auto/pull/322 by @lucastsa.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=119896497
diff --git a/value/src/main/java/com/google/auto/value/extension/AutoValueExtension.java b/value/src/main/java/com/google/auto/value/extension/AutoValueExtension.java
index 6126659..6c199c3 100644
--- a/value/src/main/java/com/google/auto/value/extension/AutoValueExtension.java
+++ b/value/src/main/java/com/google/auto/value/extension/AutoValueExtension.java
@@ -114,8 +114,7 @@
 
   /**
    * Generates the source code of the class named {@code className} to extend
-   * {@code classToExtend}, with the original annotated class of
-   * {@code classToImplement}.  The generated class should be final if {@code isFinal}
+   * {@code classToExtend}. The generated class should be final if {@code isFinal}
    * is true; otherwise it should be abstract.
    *
    * @param context The {@link Context} of the code generation for this class.