coder-chenhao
diff --git a/‎abstract-factory/README.md
-4 b/‎abstract-factory/README.md
-4
diff --git a/‎abstract-factory/etc/diagram1.png
-56.7 KB b/‎abstract-factory/etc/diagram1.png
-56.7 KB
diff --git a/‎abstract-factory/etc/diagram2.png
-25.7 KB b/‎abstract-factory/etc/diagram2.png
-25.7 KB
diff --git a/‎abstract-factory/etc/presentation.html
-190 b/‎abstract-factory/etc/presentation.html
-190
diff --git a/‎command/README.md
-4 b/‎command/README.md
-4
diff --git a/‎command/etc/diagram.png
-56.2 KB b/‎command/etc/diagram.png
-56.2 KB
@@ -188,10 +188,6 @@ Use the Abstract Factory pattern when
 ## Tutorial
 * [Abstract Factory Pattern Tutorial](https://www.journaldev.com/1418/abstract-factory-design-pattern-in-java) 
 
-## Presentations
-
-* [Abstract Factory Pattern](etc/presentation.html) 
-
 
 ## Real world examples
 
 
@@ -36,10 +36,6 @@ Use the Command pattern when you want to
 * implement callback functionality
 * implement the undo functionality
 
-## Presentations
-
-* [Command Pattern](etc/presentation.html) 
-
 ## Real world examples
 
 * [java.lang.Runnable](http://docs.oracle.com/javase/8/docs/api/java/lang/Runnable.html)