test: remove unused imports in test code

This patch removes unused imports in test code. This is mainly to remove
the potential snag for flake8/flakeheaven.

The actual cleanup was done with `pycln --all test`.

Also:
 - Remove superflous `pass` statements.

2 files changed, 3 insertions, 6 deletions

diff --git a/test/test_conjunctivegraph/test_conjunctive_graph.py b/test/test_conjunctivegraph/test_conjunctive_graph.py
index 67078e5f..d6802f3f 100644
--- a/test/test_conjunctivegraph/test_conjunctive_graph.py
+++ b/test/test_conjunctivegraph/test_conjunctive_graph.py
@@ -2,7 +2,6 @@
 Tests for ConjunctiveGraph that do not depend on the underlying store
 """
 
-from os import path
 
 import pytest
 
diff --git a/test/test_conjunctivegraph/test_conjunctivegraph_operator_combinations.py b/test/test_conjunctivegraph/test_conjunctivegraph_operator_combinations.py
index 9cd49abe..300bbb69 100644
--- a/test/test_conjunctivegraph/test_conjunctivegraph_operator_combinations.py
+++ b/test/test_conjunctivegraph/test_conjunctivegraph_operator_combinations.py
@@ -1,10 +1,8 @@
 import os
-from test.data import TEST_DATA_DIR, bob, cheese
-from test.data import context1 as c1
-from test.data import context2 as c2
-from test.data import hates, likes, michel, pizza, tarek
+from test.data import TEST_DATA_DIR, cheese
+from test.data import likes, michel, pizza, tarek
 
-from rdflib import ConjunctiveGraph, Graph, URIRef
+from rdflib import ConjunctiveGraph, Graph
 
 sportquadstrig = open(os.path.join(TEST_DATA_DIR, "sportquads.trig")).read()