Remove mirror of missing IUs.  They shouldn't be missing.

examples/featurePatch/org.eclipse.e4.ui.r422.update/pom.xml

diff --git a/examples/featurePatch/org.eclipse.e4.ui.r422.update/pom.xml b/examples/featurePatch/org.eclipse.e4.ui.r422.update/pom.xml
index aec5a99..3282d32 100644
--- a/examples/featurePatch/org.eclipse.e4.ui.r422.update/pom.xml
+++ b/examples/featurePatch/org.eclipse.e4.ui.r422.update/pom.xml
@@ -32,62 +32,6 @@
           </dependency-resolution>
         </configuration>
       </plugin>
-      <plugin>
-        <groupId>org.eclipse.tycho.extras</groupId>
-        <artifactId>tycho-p2-extras-plugin</artifactId>
-        <version>${tycho.version}</version>
-        <executions>
-          <execution>
-            <id>mirror-build</id>
-            <phase>prepare-package</phase>
-            <goals>
-              <goal>mirror</goal>
-            </goals>
-            <configuration>
-              <source>
-                <!-- source repositories to mirror from -->
-                <repository>
-                  <url>${eclipse-p2-repo.url}</url>
-                  <layout>p2</layout>
-                  <!-- supported layouts are "p2-metadata", "p2-artifacts", and "p2" (for joint repositories; default) -->
-                </repository>
-              </source>
-              <!-- starting from here all configuration parameters are optional -->
-              <!-- they are only shown here with default values for documentation purpose -->
-              <!-- List of IUs to mirror. If omitted, allIUs will be mirrored. -->
-              <!-- Omitted IU version element means latest version of the IU -->
-              <ius>
-                    <iu>
-                        <id>org.eclipse.ui.workbench</id>
-                    </iu>
-                    <iu>
-                        <id>org.eclipse.ui</id>
-                    </iu>
-                </ius>
-              <!-- The destination directory to mirror to. -->
-              <destination>${project.build.directory}/repository</destination>
-              <!-- Whether only strict dependencies should be followed. -->
-              <!-- "strict" means perfect version match -->
-              <followStrictOnly>false</followStrictOnly>
-              <!-- Whether or not to follow optional requirements. -->
-              <includeOptional>false</includeOptional>
-              <!-- Whether or not to follow non-greedy requirements. -->
-              <includeNonGreedy>false</includeNonGreedy>
-              <!-- Filter properties. E.g. filter only one platform -->
-              <!-- Whether to filter the resulting set of IUs to only -->
-              <!-- include the latest version of each IU -->
-              <latestVersionOnly>true</latestVersionOnly>
-              <!-- don't mirror artifacts, only metadata -->
-              <mirrorMetadataOnly>false</mirrorMetadataOnly>
-              <!-- whether to compress the content.xml/artifacts.xml -->
-              <compress>true</compress>
-              <!-- whether to append to the target repository content -->
-              <append>true</append>
-              <includePacked>false</includePacked>
-            </configuration>
-          </execution>
-        </executions>
-      </plugin>
     </plugins>
   </build>