Remove an unused method

Author: dmdashenkov

datastore/src/main/java/io/spine/server/storage/datastore/DsRecordStorage.java

@@ -23,7 +23,6 @@
 import com.google.cloud.datastore.BaseEntity;
 import com.google.cloud.datastore.Entity;
 import com.google.cloud.datastore.Key;
-import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Functions;
 import com.google.protobuf.Any;
 import com.google.protobuf.FieldMask;
@@ -244,19 +243,6 @@ protected DatastoreWrapper getDatastore() {
         return datastore;
     }
 
-    /**
-     * Obtains the {@link TypeUrl} of the messages to save to this store.
-     *
-     * <p>Allows the customization of the storage behavior in descendants.
-     *
-     * @return the {@link TypeUrl} of the stored messages
-     */
-    @VisibleForTesting
-    // Otherwise this getter is not used
-    TypeUrl getTypeUrl() {
-        return typeUrl;
-    }
-
     protected Entity entityRecordToEntity(I id, EntityRecordWithColumns record) {
         EntityRecord entityRecord = record.getRecord();
         Key key = datastore.keyFor(kindFrom(entityRecord), ofEntityId(id));