Removed unused exception.

.gitignore

...us-agent/src/main/java/com/chaos/octopus/agent/Agent.java

...main/java/com/chaos/octopus/agent/plugin/ChaosPlugin.java

.../com/chaos/octopus/agent/unit/plugin/ChaosPluginTest.java

...n/java/com/chaos/octopus/commons/core/ConnectMessage.java

...src/main/java/com/chaos/octopus/commons/core/Message.java

...main/java/com/chaos/octopus/commons/core/TaskMessage.java

.../java/com/chaos/octopus/commons/util/StreamUtilities.java

...haos/octopus/integrationtests/plugin/ChaosPluginTest.java

...er/src/main/java/com/chaos/octopus/server/AgentProxy.java

.../main/java/com/chaos/octopus/server/OrchestratorImpl.java

...chaos/octopus/server/exception/JobMalformedException.java