remove shade configuration - it did nothing.

the shade plugin was bound to a phase that did not exist in the hpi
packaging type.

even if it did it would be completely unclear what it did as the shade
plugin does not play nicely with hpis.

pom.xml

@@ -283,27 +283,6 @@ THE SOFTWARE.
         </pluginManagement>
 
         <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-shade-plugin</artifactId>
-                <version>3.1.1</version>
-                <executions>
-                    <execution>
-                        <phase>insert-test</phase>
-                        <goals>
-                            <goal>shade</goal>
-                        </goals>
-                        <configuration>
-                            <relocations>
-                                <relocation>
-                                    <pattern>org.objectweb.asm</pattern>
-                                    <shadedPattern>org.kohsuke.asm3</shadedPattern>
-                                </relocation>
-                            </relocations>
-                        </configuration>
-                    </execution>
-                </executions>
-            </plugin>
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>build-helper-maven-plugin</artifactId>