Revert "Manual Diagram Type"

This reverts commit 0755c44746.

src/main/java/noppes/npcs/constants/EnumDiagramLayout.java

@@ -10,8 +10,7 @@ public enum EnumDiagramLayout {
     CIRCULAR_MANUAL("diagram.circular_manual"),
     SQUARE_MANUAL("diagram.square_manual"),
     TREE_MANUAL("diagram.tree_manual"),
-    CHART("diagram.chart"),
-    MANUAL("diagram.manual");
+    CHART("diagram.chart");
 
     private String lang;