Revert "Bug 463085: .api_description missing for org.eclipse.help.base"

This reverts commit 6fde519fa43f0bf6528b4af944aabb5f2cf13c5d.
diff --git a/org.eclipse.help.base/pom.xml b/org.eclipse.help.base/pom.xml
index f65590a..4897f54 100644
--- a/org.eclipse.help.base/pom.xml
+++ b/org.eclipse.help.base/pom.xml
@@ -31,15 +31,7 @@
         <version>${tycho.version}</version>
         <configuration>
           <format>'v${buildTimestamp}'</format>
-          <additionalFileSets>
-            <fileSet>
-             <directory>${project.build.directory}</directory>
-             <includes>
-               <include>.api_description</include>
-             </includes>
-            </fileSet>
-          </additionalFileSets>
-         </configuration>
+        </configuration>
       </plugin>
     </plugins>
   </build>