Small edits to examples to get them working again with unix/micropython.

examples/mandel.py

@@ -3,10 +3,9 @@ try:
 except:
     pass
 
-
 def mandelbrot():
     # returns True if c, complex, is in the Mandelbrot set
-    @micropython.native
+    #@micropython.native
     def in_set(c):
         z = 0
         for i in range(40):

examples/pyb.py

@@ -1,9 +1,9 @@
 # pyboard testing functions for CPython
 import time
 
-
 def delay(n):
-    time.sleep(float(n) / 1000)
+    #time.sleep(float(n) / 1000)
+    pass
 
 rand_seed = 1
 def rand():