remove wait secs test

this test will always be unreliable due to the way floating point math works and the limited persission of some cpu clocks

qcodes/tests/helpers/test_waitsecs.py

@@ -13,19 +13,6 @@ def test_bad_calls():
             wait_secs(arg)
 
 
-def test_good_calls():
-    for secs in [0.001, 0.003, 0.01, 0.03, 0.1, 0.3, 1]:
-        finish_clock = time.perf_counter() + secs
-        secs_out = wait_secs(finish_clock)
-        assert secs_out > secs - 3e-4
-        # add a tiny offset as this test may fail if
-        # otherwise if the two calls to perf_counter are close
-        # enough to return the same result as a + b - a cannot
-        # in general be assumed to be <= b in floating point
-        # math (here a is perf_counter() and b is the wait time
-        assert secs_out <= secs + 1e-14
-
-
 def test_warning():
     with LogCapture() as logs:
         secs_out = wait_secs(time.perf_counter() - 1)