don't index blobs

src/main/java/com/commafeed/backend/model/Feed.java

@@ -11,8 +11,6 @@ import javax.persistence.Temporal;
 import javax.persistence.TemporalType;
 import javax.persistence.Transient;
 
-import org.hibernate.annotations.Index;
-
 import com.google.common.collect.Sets;
 
 @Entity
@@ -21,7 +19,6 @@ import com.google.common.collect.Sets;
 public class Feed extends AbstractModel {
 
 	@Column(length = 2048, nullable = false, unique = true)
-	@Index(name = "feed_index")
 	private String url;
 
 	@Transient

src/main/java/com/commafeed/backend/model/FeedEntry.java

@@ -22,7 +22,6 @@ import org.hibernate.annotations.Index;
 public class FeedEntry extends AbstractModel {
 
 	@Column(length = 2048, nullable = false, unique = true)
-	@Index(name = "guid_index")
 	private String guid;
 
 	@ManyToOne

src/main/java/com/commafeed/frontend/rest/resources/SubscriptionsREST.java

@@ -112,6 +112,7 @@ public class SubscriptionsREST extends AbstractREST {
 	@GET
 	@Path("deleteCategory")
 	public Response deleteCategory(@QueryParam("id") Long id) {
+		feedCategoryService.deleteById(id);
 		return Response.ok().build();
 	}