got rid of 'accept' dir in the tests

tests/run/tlowhigh.nim

@@ -0,0 +1,24 @@
+discard """
+  file: "tlowhigh.nim"
+  output: "10"
+"""
+# Test the magic low() and high() procs
+
+type
+  myEnum = enum e1, e2, e3, e4, e5
+
+var
+  a: array [myEnum, int]
+
+for i in low(a) .. high(a):
+  a[i] = 0
+
+proc sum(a: openarray[int]): int =
+  result = 0
+  for i in low(a)..high(a):
+    inc(result, a[i])
+
+write(stdout, sum([1, 2, 3, 4]))
+#OUT 10
+
+