Remove obsolete image and update release notes

Signed-off-by: Pierre R. Mai <pmai@pmsf.de>
Signed-off-by: Habedank Clemens <qxs2704@europe.bmw.corp>

Author: pmai

README.md

@@ -7,9 +7,6 @@ The Open Simulation Interface <sup>[[1]](https://www.hot.ei.tum.de/forschung/aut
 
 As the complexity of automated driving functions rapidly increases, the requirements for test and development methods are growing. Testing in virtual environments offers the advantage of completely controlled and reproducible environment conditions.
 
-In this context, OSI defines generic interfaces to ensure modularity, integrability, and interchangeability of the individual components:
-![](doc/images/osicontextwiki.png)
-
 For more information on OSI see the [official documentation](https://opensimulationinterface.github.io/osi-documentation/) or the [official reference documentation](https://opensimulationinterface.github.io/open-simulation-interface/) for defined protobuf messages. 
 
 [1] Hanke, T., Hirsenkorn, N., van-Driesten, C., Garcia-Ramos, P., Schiementz, M., Schneider, S. & Biebl, E. (2017, February 03). *A generic interface for the environment perception of automated driving functions in virtual scenarios.* Retrieved January 25, 2020, from https://www.hot.ei.tum.de/forschung/automotive-veroeffentlichungen/ 

doc/releases/v03.03.rst

@@ -38,4 +38,5 @@ the introduction of brand new top level messages which extend OSI's scope beyond
 
 `Content/Changes <https://github.com/OpenSimulationInterface/open-simulation-interface/milestone/18?closed=1>`_:
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-- **Bug Fix**: Versioning in VERSION file wrong in 3.3.0. This lead to wrong versioning in Doxygen documentation.
+- **Bug Fix**: Fixed outdated version information in VERSION file in 3.3.0. This lead to wrong versioning in proto definitions and Doxygen documentation.
+- **Bug Fix**: Removed outdated picture in README.md.