remove i18n as default grails forge plugin

Author: jdaugherty

grails-forge/grails-forge-core/src/main/java/org/grails/forge/feature/grails/GrailsDefaultPlugins.java

@@ -55,7 +55,7 @@ public boolean supports(ApplicationType applicationType) {
 
     @Override
     public void apply(GeneratorContext generatorContext) {
-        Arrays.asList("rest-transforms", "databinding", "i18n", "services", "url-mappings", "interceptors")
+        Arrays.asList("rest-transforms", "databinding", "services", "url-mappings", "interceptors")
                 .forEach((artifact) -> {
                     generatorContext.addDependency(Dependency.builder()
                             .groupId("org.apache.grails")