docs(readme): remove vaadin directory

Author: javier-godoy

README.md

@@ -35,13 +35,6 @@ Add the following dependencies in your pom.xml file:
 </dependency>
 ```
 
-```xml
-<repository>
-   <id>vaadin-addons</id>
-   <url>https://maven.vaadin.com/vaadin-addons</url>
-</repository>
-```
-
 For SNAPSHOT versions see [here](https://maven.flowingcode.com/snapshots/).
 
 ## Building and running demo
@@ -97,4 +90,4 @@ To do so, just add ```com.flowingcode``` to the ```vaadin.allowed-packages``` pr
 
 ```vaadin.allowed-packages = com.vaadin,org.vaadin,dev.hilla,com.flowingcode```
 
-More information on Spring scanning configuration [here](https://vaadin.com/docs/latest/integrations/spring/configuration/#configure-the-scanning-of-packages).
+More information on Spring scanning configuration [here](https://vaadin.com/docs/latest/integrations/spring/configuration/#configure-the-scanning-of-packages).