[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/main/java/org/onosproject/net/intent/impl/compiler/PathCompiler.java b/core/net/src/main/java/org/onosproject/net/intent/impl/compiler/PathCompiler.java
index 69faaae..b831fef 100644
--- a/core/net/src/main/java/org/onosproject/net/intent/impl/compiler/PathCompiler.java
+++ b/core/net/src/main/java/org/onosproject/net/intent/impl/compiler/PathCompiler.java
@@ -37,9 +37,9 @@
 import org.onosproject.net.flow.criteria.VlanIdCriterion;
 import org.onosproject.net.flow.instructions.Instruction;
 import org.onosproject.net.flow.instructions.L2ModificationInstruction;
+import org.onosproject.net.intent.IntentCompilationException;
 import org.onosproject.net.intent.PathIntent;
 import org.onosproject.net.intent.constraint.EncapsulationConstraint;
-import org.onosproject.net.intent.impl.IntentCompilationException;
 import org.onosproject.net.resource.Resource;
 import org.onosproject.net.resource.ResourceAllocation;
 import org.onosproject.net.resource.ResourceService;