Revert "Do not always cleanup Guava shaded module before packaging"

This reverts commit 5be52ec.

Author: lukasz-antoniak

guava-shaded/pom.xml

@@ -94,6 +94,21 @@
           </execution>
         </executions>
       </plugin>
+      <plugin>
+        <artifactId>maven-clean-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>clean-classes</id>
+            <phase>package</phase>
+            <goals>
+              <goal>clean</goal>
+            </goals>
+            <configuration>
+              <directory>${project.build.outputDirectory}</directory>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
       <plugin>
         <artifactId>maven-dependency-plugin</artifactId>
         <executions>