Fix checkstyle issue

Author: rubengees

library/src/main/java/me/proxer/library/entity/info/AdaptionInfo.java

@@ -34,7 +34,6 @@ public class AdaptionInfo implements ProxerIdItem {
     private Medium medium;
 
     public AdaptionInfo(final String id, final String name, final Medium medium) {
-        // TODO: Remove once Kapt/Room can handle @Nullable in constructors.
         this.id = id;
         this.name = name;
         this.medium = medium;