Update README. (#2788)

Author: janiversen

README.rst

@@ -48,30 +48,6 @@ Source code on `github <https://github.com/pymodbus-dev/pymodbus>`_
 
 Full documentation for newest releases as well as the bleeding edge (dev) `readthedocs <https://pymodbus.readthedocs.io>`_
 
-pymodbus is maintained in 2 versions:
-- pymodbus, the official library
-- pymodbus_ha_core
-
-Pymodbus_ha
------------
-**CURRENTLY IN DEVELOPMENT**
-
-`Pymodbus_ha <https://pypi.org/project/pymodbus-ha/>`_ is
-an alias to pymodbus, available on pypi.org.
-
-Being an alias means it is 100% the same as pymodbus, without any extra
-code, just different distribution and package names.
-
-The idea is to allow projects like e.g. home-assistant to use this library
-in the core, while custom parts uses the normal pymodbus. Doing so allows
-the core and the custom part to use different versions.
-
-Of course the decision to use the library or not, is left to each project,
-just like it is the project that decides whether or not to use pymodbus.
-
-Pymodbus can easily be extended with other aliases if needed. Please open
-an issue for a discussion if wanted.
-
 Pymodbus in a nutshell
 ----------------------
 Pymodbus consist of 5 parts: