[unittest] Removed test_all since it's overkill right now

.gitlab-ci.yml

@@ -2,4 +2,4 @@ image: gepgitlab.laas.fr:4567/Gepetto/example-robot-data
 
 test:
   script:
-    - cd unittest && python test_all.py
+    - cd unittest && python test_load.py

unittest/test_all.py

-import sys
-import unittest
-
-testmodules = [
-    'test_load',
-]
-
-suite = unittest.TestSuite()
-
-for t in testmodules:
-    try:
-        # If the module defines a suite() function, call it to get the suite.
-        mod = __import__(t, globals(), locals(), ['suite'])
-        suitefn = getattr(mod, 'suite')
-        suite.addTest(suitefn())
-    except (ImportError, AttributeError):
-        # else, just load all the test cases from the module.
-        suite.addTest(unittest.defaultTestLoader.loadTestsFromName(t))
-
-result = unittest.TextTestRunner().run(suite)
-sys.exit(len(result.errors) + len(result.failures))