Do not annotate delombed files as generated.

Since we "delombok" the model classes at build time, the only reason we
need Lombok as a runtime dependency is because the "delomboked" classes
are annotated with the "@lombok.generated" annotation.

That annotation may be useful for code analysis, but a nearly 2MB
dependency just for one annotation is certainly not worth it.

So we configure Lombok _not_ to add that annotation, and remove the
entire Lombok runtime dependency. We only need Lombok at build time.

core/pom.xml

@@ -17,11 +17,6 @@
   </scm>
 
   <dependencies>
-    <dependency>
-      <groupId>org.projectlombok</groupId>
-      <artifactId>lombok</artifactId>
-      <version>1.18.34</version>
-    </dependency>
     <dependency>
       <groupId>org.antlr</groupId>
       <artifactId>antlr4-runtime</artifactId>

core/src/main/lombok/lombok.config

@@ -0,0 +1 @@
+lombok.addLombokGeneratedAnnotation = false