Implement new method scriptRemoved(CompiledScript) in `ScriptEngine…

…Service`

This [PR](elastic/elasticsearch#8062) broke ScriptEngineService by adding a new method `scriptRemoved(CompiledScript)`.

Closes #6.

(cherry picked from commit 3985cec)

src/main/java/org/elasticsearch/script/mvel/MvelScriptEngineService.java

@@ -26,6 +26,7 @@
 import org.elasticsearch.common.inject.Inject;
 import org.elasticsearch.common.math.UnboxedMathUtils;
 import org.elasticsearch.common.settings.Settings;
+import org.elasticsearch.script.CompiledScript;
 import org.elasticsearch.script.ExecutableScript;
 import org.elasticsearch.script.ScriptEngineService;
 import org.elasticsearch.script.SearchScript;
@@ -111,6 +112,11 @@ public void close() {
         //To change body of implemented methods use File | Settings | File Templates.
     }
 
+    @Override
+    public void scriptRemoved(@Nullable CompiledScript compiledScript) {
+
+    }
+
     public static class MvelExecutableScript implements ExecutableScript {
 
         private final ExecutableStatement script;