Remove bytecode installation for python modules
Remove bytecode installation as it was broken with the changed layout in Python3 (ATLINFR-3816). Moreover it does not seem to make any difference in terms of application startup.
Instead only compile the python modules using the new pyCompile.py
script. Notable difference is that we now always compile all python
sources irrespective of which file changed. This is much faster than
launching one python process per file.