Increase delay in test_pool to avoid race condition, and remove obsolete version-check

Author: A. Jesse Jiryu Davis

test/test_pooling_base.py

@@ -776,10 +776,6 @@ def _test_pool(self, use_request):
  )
 
  db = cx.pymongo_test
- if not version.at_least(db.connection, (1, 7, 2)):
- raise SkipTest("Need at least MongoDB version 1.7.2 to use"
- " db.eval(nolock=True)")
-
  db.test.remove(safe=True)
  db.test.insert({'_id': 1}, safe=True)
 
@@ -806,8 +802,8 @@ def find_slow():
 
  history.append('find_slow start')
 
- # Javascript function that pauses 5 seconds.
- fn = delay(5)
+ # Javascript function that pauses N seconds per document
+ fn = delay(10)
  self.assertEqual(1, db.test.find({"$where": fn}).count())
 
  history.append('find_slow done')