Make pylint check cyclic-imports again. Delete own checking code.
@@ -23,7 +23,9 @@ ignore-patterns=
# Use multiple processes to speed up Pylint. Specifying 0 will auto-detect the
# number of processors available to use.
-jobs=0
+# FIXME(fk) there is a bug in pylint: https://github.com/PyCQA/pylint/issues/4171
+# For some reason, checking for cylic imports only works when using jobs=1. WTF.
+jobs=1
# Control the amount of potential inferred values when inferring a single
# object. This can help the performance when dealing with large functions or
