Add nether tress into floating tree remover (#2146)

* Add nether tress into floating tree remover

* Add nether stems

worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/FloatingTreeRemover.java

@@ -64,7 +64,11 @@ public class FloatingTreeRemover implements BlockTool {
                 || type == BlockTypes.RED_MUSHROOM_BLOCK
                 || type == BlockTypes.BROWN_MUSHROOM_BLOCK
                 || type == BlockTypes.MUSHROOM_STEM
-                || type == BlockTypes.VINE;
+                || type == BlockTypes.VINE
+                || type == BlockTypes.NETHER_WART_BLOCK
+                || type == BlockTypes.WARPED_WART_BLOCK
+                || type == BlockTypes.CRIMSON_STEM
+                || type == BlockTypes.WARPED_STEM;
     }
 
     @Override