[ONOS-4513] Move optical Intent compilers out to optical-model (3/3)

- core/net is now optical clean
- reverting part of Change-Id: Ib8ddac6e93327ade9d42984d8eba66be7047d051
 which lead to loss of package import information, causing OSGi issue

Change-Id: Ie6b16abd3ecc872f0920d29c7577a10c44091af6
diff --git a/core/net/src/test/java/org/onosproject/net/intent/impl/IntentManagerTest.java b/core/net/src/test/java/org/onosproject/net/intent/impl/IntentManagerTest.java
index b1e6376..585d3a0 100644
--- a/core/net/src/test/java/org/onosproject/net/intent/impl/IntentManagerTest.java
+++ b/core/net/src/test/java/org/onosproject/net/intent/impl/IntentManagerTest.java
@@ -35,6 +35,7 @@
 import org.onosproject.net.NetworkResource;
 import org.onosproject.net.intent.FlowRuleIntent;
 import org.onosproject.net.intent.Intent;
+import org.onosproject.net.intent.IntentCompilationException;
 import org.onosproject.net.intent.IntentCompiler;
 import org.onosproject.net.intent.IntentData;
 import org.onosproject.net.intent.IntentEvent;