Remove checks for FEniCS and python3 (#182)

Co-authored-by: Frédéric Simonis <[email protected]>

setup.py

@@ -1,29 +1,6 @@
 import os
 from setuptools import setup
 import versioneer
-import warnings
-
-# from https://stackoverflow.com/a/9079062
-import sys
-if sys.version_info[0] < 3:
-    raise Exception("fenicsprecice only supports Python3. Did you run $python setup.py <option>.? "
-                    "Try running $python3 setup.py <option>.")
-
-if sys.version_info[1] == 6 and sys.version_info[2] == 9:
-    warnings.warn("It seems like you are using Python version 3.6.9. There is a known bug with this Python version "
-                  "when running the tests (see https://github.com/precice/fenics-adapter/pull/61). If you want to "
-                  "run the tests, please install a different Python version.")
-
-try:
-    from fenics import *
-except ModuleNotFoundError:
-    warnings.warn("No FEniCS installation found on system. Please install FEniCS and check the installation.\n\n"
-                  "You can check this by running the command\n\n"
-                  "python3 -c 'from fenics import *'\n\n"
-                  "Please check https://fenicsproject.org/download/ for installation guidance.\n"
-                  "The installation will continue, but please be aware that your installed version of the "
-                  "fenics-adapter might not work as expected.")
-
 this_directory = os.path.abspath(os.path.dirname(__file__))
 with open(os.path.join(this_directory, 'README.md'), encoding='utf-8') as f:
     long_description = f.read()