remove example functions and remove imports from shell (#314)

scripts/example_functions.py

@@ -1,33 +0,0 @@
-import ray
-import numpy as np
-from typing import List
-
-@ray.remote([int], [float])
-def estimate_pi(n):
-  x = np.random.uniform(size=n)
-  y = np.random.uniform(size=n)
-  return 4 * np.mean(x ** 2 + y ** 2 < 1)
-
-@ray.remote([int], [int])
-def increment(x):
-  return x + 1
-
-@ray.remote([int, int], [int])
-def add(a, b):
-  return a + b
-
-@ray.remote([List], [np.ndarray])
-def zeros(shape):
-  return np.zeros(shape)
-
-@ray.remote([np.ndarray, np.ndarray], [np.ndarray])
-def dot(a, b):
-  return np.dot(a, b)
-
-@ray.remote([], [])
-def throw_exception():
-  raise Exception("This function intentionally failed.")
-
-@ray.remote([], [])
-def no_op():
-  pass

scripts/shell.py

@@ -6,10 +6,6 @@ import numpy as np
 
 import ray
 
-import ray.array.remote as ra
-import ray.array.distributed as da
-import example_functions
-
 def main(argv):
   DEFAULT_NUM_WORKERS = 1
   DEFAULT_WORKER_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), "default_worker.py")