Potential fix for not cleaning up canceled services

Controllers don't get removed from StabilityMonitor in case state of service is canceled and not removed. 
For mode = REMOVE

I am not sure this fix is appropriate at all but it does solves leak.

example of memory leak from yourkit
```
+---------------------------------------------------------------------------------------------------------------+-----------------+----------------+
|                                                     Name                                                      |  Retained Size  |  Shallow Size  |
+---------------------------------------------------------------------------------------------------------------+-----------------+----------------+
|  +---org.jboss.as.server.deployment.DeploymentUnitPhaseService                                                |            152  |            32  |
|    |                                                                                                          |                 |                |
|    +---value of org.jboss.msc.value.ImmediateValue                                                            |            168  |            16  |
|      |                                                                                                        |                 |                |
|      +---serviceValue of org.jboss.msc.service.ServiceControllerImpl                                          |          5.432  |           112  |
|        |                                                                                                      |                 |                |
|        +---parent of org.jboss.msc.service.ServiceControllerImpl                                              |          6.256  |           112  |
|          |                                                                                                    |                 |                |
|          +---parent of org.jboss.msc.service.ServiceControllerImpl                                            |        602.744  |           112  |
|            |                                                                                                  |                 |                |
|            +---parent of org.jboss.msc.service.ServiceControllerImpl                                          |            704  |           112  |
|              |                                                                                                |                 |                |
|              +---[275] of java.lang.Object[512]                                                               |        607.904  |         2.064  |
|                |                                                                                              |                 |                |
|                +---table of org.jboss.msc.service.IdentityHashSet                                             |        607.936  |            32  |
|                  |                                                                                            |                 |                |
|                  +---controllers of org.jboss.msc.service.StabilityMonitor                                    |        608.424  |            40  |
|                    |                                                                                          |                 |                |
|                    +---monitor of org.jboss.as.controller.ContainerStateMonitor                               |            496  |            32  |
|                      |                                                                                        |                 |                |
|                      +---stateMonitor of org.jboss.as.controller.ModelControllerImpl                          |          1.256  |            72  |
|                        |                                                                                      |                 |                |
|                        +---controller of org.jboss.as.jmx.model.ModelControllerMBeanHelper                    |            144  |            32  |
|                          |                                                                                    |                 |                |
|                          +---exprHelper of org.jboss.as.jmx.model.ModelControllerMBeanServerPlugin            |            328  |            24  |
|                            |                                                                                  |                 |                |
|                            +---[0] of java.lang.Object[1]                                                     |             16  |            16  |
|                              |                                                                                |                 |                |
|                              +---array of java.util.concurrent.CopyOnWriteArrayList                           |             72  |            16  |
|                                |                                                                              |                 |                |
|                                +---al of java.util.concurrent.CopyOnWriteArraySet                             |             88  |            16  |
|                                  |                                                                            |                 |                |
|                                  +---delegates of org.jboss.as.jmx.PluggableMBeanServerImpl                   |            120  |            16  |
|                                    |                                                                          |                 |                |
|                                    +---platformMBeanServer of java.lang.management.ManagementFactory [Class]  |            448  |           336  |
+---------------------------------------------------------------------------------------------------------------+-----------------+----------------+
```