AnnotationCollector not removed during stub generation

The Groovy Stubs generator leaves the AnnotationCollectors in the generator stubs sources instead of replacing them with the collected annotations, which in turn causes javac to fail, since they are not valid annotations. (Related to GROOVY-7056)

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project example: Compilation failure
[ERROR] /C:/dev/github/groovy-stubs-annotation/target/generated-sources/groovy-stubs/main/org/example/Service.java:[19,18] incompatible types: groovy.transform.CompileDynamic cannot be converted to java.lang.annotation.Annotation

@CompileStatic
class Service {

  @CompileDynamic
  List<String> dynamic() {
    []
  }
}

gets transformed into

@groovy.transform.CompileStatic() public class Service
  extends java.lang.Object  implements
    groovy.lang.GroovyObject {
@groovy.transform.CompileDynamic() public  java.util.List<java.lang.String> dynamic() { return (java.util.List<java.lang.String>)null;}
}

See attached Project to reproduce

For groovy 2.4.15: ./mvnw clean install

For groovy 2.5.2: ./mvnw clean install -Pgroovy-2.5