Resmoke gets much slower with more parallelism

diff --git a/buildscripts/resmokelib/testing/executor.py b/buildscripts/resmokelib/testing/executor.py

index 3628fa0..0ce5ef9 100644

--- a/buildscripts/resmokelib/testing/executor.py

+++ b/buildscripts/resmokelib/testing/executor.py

@@ -149,10 +149,6 @@ class TestGroupExecutor(object):

                 t.daemon = True

                 t.start()

                 threads.append(t)

-                # SERVER-24729 Need to stagger when jobs start to reduce I/O load if there

-                # are many of them.  Both the 5 and the 10 are arbitrary.

-                if len(threads) >= 5:

-                    time.sleep(10)

             joined = False

             while not joined:

% resmoke -j1 --suite=decimal