docs: make timeit autorange description more concise

The original form said basically the same thing twice.

Author: scop

Doc/library/timeit.rst

@@ -148,10 +148,9 @@ The module defines three convenience functions and a public class:
       Automatically determine how many times to call :meth:`.timeit`.
 
       This is a convenience function that calls :meth:`.timeit` repeatedly
-      so that the total time >= 0.2 second, returning the eventual
-      (number of loops, time taken for that number of loops). It calls
-      :meth:`.timeit` with increasing numbers from the sequence 1, 2, 5,
-      10, 20, 50, ... until the time taken is at least 0.2 seconds.
+      with increasing numbers from the sequence 1, 2, 5, 10, 20, 50, ...
+      until the time taken is at least 0.2 seconds, returning the eventual
+      (number of loops, time taken for that number of loops).
 
       If *callback* is given and is not ``None``, it will be called after
       each trial with two arguments: ``callback(number, time_taken)``.