[SCB-1870]move non integration tests from demo to servicecomb-samples

[liubao68]

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[liubao68]

This demo has moved to https://github.com/apache/servicecomb-samples/tree/master/java-chassis-deployment-samples/war-external-tomcat

[coveralls]

Coverage increased (+0.01%) to 85.168% when pulling 0f3bd34 on liubao68:master into deee83a on apache:master.