Revert "[ci] debug docker timing test"

This reverts commit 85cef289.

beat/core/test/test_docker.py

@@ -242,9 +242,7 @@ class HostTest(unittest.TestCase):
         nb_images = len(Host.images_cache)
         self.assertTrue(nb_images > 0)
 
-        time_nocache = stop - start
-        print(time_nocache)
-        self.assertTrue(time_nocache > 2.0)
+        self.assertTrue(stop - start > 2.0)
 
         # Should be instantaneous
         start = time.time()
@@ -256,9 +254,7 @@ class HostTest(unittest.TestCase):
 
         self.assertEqual(len(Host.images_cache), nb_images)
 
-        time_cache = stop - start
-        print(time_cache)
-        self.assertTrue(time_cache < 1.0)
+        self.assertTrue(stop - start < 1.0)
 
 
     @slow