Remove checksum from installed artifacts

This creates md5 and sha1 checksums for the dist-archive pom in the
local maven repository. It is not required.
diff --git a/dist-archive/pom.xml b/dist-archive/pom.xml
index 6c22a6b..ad71591 100644
--- a/dist-archive/pom.xml
+++ b/dist-archive/pom.xml
@@ -216,12 +216,6 @@
               </execution>
             </executions>
           </plugin>
-          <plugin>
-            <artifactId>maven-install-plugin</artifactId>
-            <configuration>
-              <createChecksum>true</createChecksum>
-            </configuration>
-          </plugin>
         </plugins>
       </build>
     </profile>