Update README.md

Author: kaischaabouni

README.md

@@ -5,9 +5,6 @@ Attack Tree Designer
 ![Attack Tree Environment](http://forge.modelio.org/attachments/download/22610/Example.png)
 **Figure 1 : Attack Tree Designer Environment**
 
-![alt text](https://github.com/adam-p/markdown-here/raw/master/src/common/images/icon48.png "Logo Title Text 1")
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 Attack Tree Designer - User Manual
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