LUCENE-6072: fix delegation of remove method

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1641862 13f79535-47bb-0310-9956-ffa450edef68

lucene/test-framework/src/java/org/apache/lucene/mockfile/FilterFileSystem.java

@@ -109,6 +109,11 @@ public class FilterFileSystem extends FileSystem {
         public Path next() {
           return new FilterPath(iterator.next(), FilterFileSystem.this);
         }
+        
+        @Override
+        public void remove() {
+          iterator.remove();
+        }
       };
     };
   }
@@ -128,6 +133,11 @@ public class FilterFileSystem extends FileSystem {
         public FileStore next() {
           return new FilterFileStore(iterator.next(), parent.getScheme());
         }
+        
+        @Override
+        public void remove() {
+          iterator.remove();
+        }
       };
     };
   }

lucene/test-framework/src/java/org/apache/lucene/mockfile/FilterPath.java

@@ -237,6 +237,11 @@ public class FilterPath implements Path {
       public Path next() {
         return new FilterPath(iterator.next(), fileSystem);
       }
+
+      @Override
+      public void remove() {
+        iterator.remove();
+      }
     };
   }