Bugfix/fix readthedocs (#574)

* add dummy text

* change linopy version discovery

* remove redundnat comments

---------

Co-authored-by: Robbie Muir <robbie.muir@gmail.com>

Author: RobbieKiwi

doc/conf.py

@@ -13,7 +13,7 @@
 # import os
 # import sys
 # sys.path.insert(0, os.path.abspath('.'))
-import pkg_resources  # part of setuptools
+import linopy
 
 # -- Project information -----------------------------------------------------
 
@@ -22,12 +22,9 @@
 author = "Fabian Hofmann"
 
 # The full version, including alpha/beta/rc tags
-version = pkg_resources.get_distribution("linopy").version
+version = linopy.__version__
 release = "master" if "dev" in version else version
 
-# For some reason is this needed, otherwise autosummary does fail on RTD but not locally
-import linopy  # noqa
-
 # -- General configuration ---------------------------------------------------
 
 # Add any Sphinx extension module names here, as strings. They can be