This patch should fix the creation and addition of the scripted_platform
python module into the lldb.plugins module.
Previously, we were creating the plugins submodule, each time with a
different source file (either scripted_process or scripted_platform).
The removes the redundant create_python_package call and group both
python source files toghether.
Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>