Remove docker-build from unit test job; e2e test already does this

Change-Id: I2568b87f3c0e6b39b867cadd71393dc8a375e2ae
diff --git a/jjb/verify/voltha-api-server.yaml b/jjb/verify/voltha-api-server.yaml
index c00b9f0..736fa69 100644
--- a/jjb/verify/voltha-api-server.yaml
+++ b/jjb/verify/voltha-api-server.yaml
@@ -20,7 +20,7 @@
       - 'make-unit-test':
           build-node: 'ubuntu16.04-basebuild-2c-4g'
           dest-gopath: "github.com/opencord"
-          unit-test-targets: 'lint sca test docker-build'
+          unit-test-targets: 'lint sca test'
           unit-test-keep-going: 'true'
           junit-allow-empty-results: true
       - 'voltha-patch-test':