remove deprecated information about ar 2.0

Author: oliverrahner

modules/ROOT/nav.adoc

@@ -58,10 +58,7 @@
 ** xref:tmt/image.adoc[Images]
 ** xref:tmt/video.adoc[Videos]
 
-* agrirouter 2.0 Transition
-** xref:ar2/summary.adoc[Summary of Changes]
-** xref:ar2/overview.adoc[About the project]
-** xref:ar2/testing.adoc[Testing]
+* xref:ar2/summary.adoc[agrirouter 2.0 Changes]
 
 * Tools
 ** xref:tools/io-tool/overview.adoc[IO-Tool]

modules/ROOT/pages/ar2/overview.adoc

@@ -1,9 +1,9 @@
 = Summary of technical changes in agrirouter 2.0
 
-The migration from agrirouter 1.0 to agrirouter 2.0 was not just a rebuild of the old system. A lot of functionalities were rethought to simplify the user experience. 
+The migration from agrirouter 1.0 to agrirouter 2.0 in 2023 was not just a complete rebuild of the old system. A lot of functionalities were rethought to simplify the user experience. 
 The following topics were adjusted:
 
-* **A completely new UserInterface**: 
+* **A completely new User Interface**: 
 ** The user interface now shows the routings more interactively. 
 ** The differentiation between onFarm-Software and onField-Devices is clearly visible
 * **Account pairing was removed**. The feature was not used and only lead to confusion.
@@ -15,7 +15,6 @@ The following topics were adjusted:
 
 * **Switching GatewayID MQTT<->HTTP is now allowed**: Data loss could happen during switch from MQTT to HTTP and vice-versa. It may only be used for migration from one gateway to the other, please contact us before trying it.
 
-
 * **Multiple redirect URLs can now be set**: The first redirect URL set comes into play when an authorize request does not provide a redirect URL (or an invalid one)  an authorize request’s redirect_uri should always be set.
  
 * **ErrorCodes more clearly defined**: