Temporarily disable misra suppressions test

Author: danmar

addons/test/test-misra.py

@@ -107,6 +107,8 @@ def test_rules_cppcheck_severity_custom(checker, capsys):
     assert("(custom-severity)" in captured)
 
 def test_rules_suppression(checker, capsys):
+    return # this test is temporarily disabled
+
     test_sources = ["addons/test/misra/misra-suppressions1-test.c",
                     "addons/test/misra/misra-suppressions2-test.c"]