ninja-fix: revert 'cleaning orphaned processes' until cqlshlib tests are dockerised
 ref: https://github.com/apache/cassandra-builds/pull/50
diff --git a/jenkins-dsl/cassandra_job_dsl_seed.groovy b/jenkins-dsl/cassandra_job_dsl_seed.groovy
index 0ed85b3..d97a740 100644
--- a/jenkins-dsl/cassandra_job_dsl_seed.groovy
+++ b/jenkins-dsl/cassandra_job_dsl_seed.groovy
@@ -416,8 +416,6 @@
                 // if the agent is busy, just prune everything that is older than maxJobHours
                 task('.', """
                     echo "Cleaning project…"; git clean -xdff ;
-                    echo "Cleaning processes…" ;
-                    if ! pgrep -af "cassandra-builds/build-scripts" ; then pkill -9 -f org.apache.cassandra. || echo "already clean" ; fi ;
                     echo "Pruning docker…" ;
                     if pgrep -af "cassandra-builds/build-scripts" ; then docker system prune --all --force --filter "until=${maxJobHours}h" || true ; else  docker system prune --all --force --volumes || true ;  fi;
                     echo "Reporting disk usage…"; df -h ;
@@ -509,8 +507,6 @@
                         // if the agent is busy, just prune everything that is older than maxJobHours
                         task('.', """
                             echo "Cleaning project…"; git clean -xdff -e build/test/jmh-result.json ;
-                            echo "Cleaning processes…" ;
-                            if ! pgrep -af "cassandra-builds/build-scripts" ; then pkill -9 -f org.apache.cassandra. || echo "already clean" ; fi ;
                             echo "Pruning docker…" ;
                             if pgrep -af "cassandra-builds/build-scripts" ; then docker system prune --all --force --filter "until=${maxJobHours}h" || true ; else  docker system prune --all --force --volumes || true ;  fi;
                             echo "Reporting disk usage…"; du -xm / 2>/dev/null | sort -rn | head -n 30 ; df -h ;
@@ -606,8 +602,6 @@
                             // if the agent is busy, just prune everything that is older than maxJobHours
                             task('.', """
                                 echo "Cleaning project…"; git clean -xdff ;
-                                echo "Cleaning processes…" ;
-                                if ! pgrep -af "cassandra-builds/build-scripts" ; then pkill -9 -f org.apache.cassandra. || echo "already clean" ; fi ;
                                 echo "Pruning docker…" ;
                                 if pgrep -af "cassandra-builds/build-scripts" ; then docker system prune --all --force --filter "until=${maxJobHours}h" || true ; else  docker system prune --all --force --volumes || true ;  fi;
                                 echo "Reporting disk usage…"; df -h ;
@@ -661,8 +655,6 @@
                     // if the agent is busy, just prune everything that is older than maxJobHours
                     task('.', """
                         echo "Cleaning project…"; git clean -xdff ;
-                        echo "Cleaning processes…" ;
-                        if ! pgrep -af "cassandra-builds/build-scripts" ; then pkill -9 -f org.apache.cassandra. || echo "already clean" ; fi ;
                         echo "Pruning docker…" ;
                         if pgrep -af "cassandra-builds/build-scripts" ; then docker system prune --all --force --filter "until=${maxJobHours}h" || true ; else  docker system prune --all --force --volumes || true ;  fi;
                         echo "Reporting disk usage…"; df -h ;
@@ -808,8 +800,6 @@
             // if the agent is busy, just prune everything that is older than maxJobHours
             task('.', """
                 echo "Cleaning project…"; git clean -xdff ;
-                echo "Cleaning processes…" ;
-                if ! pgrep -af "cassandra-builds/build-scripts" ; then pkill -9 -f org.apache.cassandra. || echo "already clean" ; fi ;
                 echo "Pruning docker…" ;
                 if pgrep -af "cassandra-builds/build-scripts" ; then docker system prune --all --force --filter "until=${maxJobHours}h" || true ; else  docker system prune --all --force --volumes || true ;  fi;
                 echo "Reporting disk usage…"; df -h ;
@@ -926,8 +916,6 @@
                 // if the agent is busy, just prune everything that is older than maxJobHours
                 task('.', """
                     echo "Cleaning project…"; git clean -xdff ${targetName == 'microbench' ? '-e build/test/jmh-result.json' : ''};
-                    echo "Cleaning processes…" ;
-                    if ! pgrep -af "cassandra-builds/build-scripts" ; then pkill -9 -f org.apache.cassandra. || echo "already clean" ; fi ;
                     echo "Pruning docker…" ;
                     if pgrep -af "cassandra-builds/build-scripts" ; then docker system prune --all --force --filter "until=${maxJobHours}h" || true ; else  docker system prune --all --force --volumes || true ;  fi;
                     echo "Reporting disk usage…"; du -xm / 2>/dev/null | sort -rn | head -n 30 ; df -h ;
@@ -1066,8 +1054,6 @@
                     // if the agent is busy, just prune everything that is older than maxJobHours
                     task('.', """
                         echo "Cleaning project…" ; git clean -xdff ;
-                        echo "Cleaning processes…" ;
-                        if ! pgrep -af "cassandra-builds/build-scripts" ; then pkill -9 -f org.apache.cassandra. || echo "already clean" ; fi ;
                         echo "Pruning docker…" ;
                         if pgrep -af "cassandra-builds/build-scripts" ; then docker system prune --all --force --filter "until=${maxJobHours}h" || true ; else  docker system prune --all --force --volumes || true ;  fi;
                         echo "Reporting disk usage…"; df -h ;
@@ -1177,8 +1163,6 @@
             // if the agent is busy, just prune everything that is older than maxJobHours
             task('.', """
                 echo "Cleaning project…"; git clean -xdff ;
-                echo "Cleaning processes…" ;
-                if ! pgrep -af "cassandra-builds/build-scripts" ; then pkill -9 -f org.apache.cassandra. || echo "already clean" ; fi ;
                 echo "Pruning docker…" ;
                 if pgrep -af "cassandra-builds/build-scripts" ; then docker system prune --all --force --filter "until=${maxJobHours}h" || true ; else  docker system prune --all --force --volumes || true ;  fi;
                 echo "Reporting disk usage…"; df -h ;