got rid of 'accept' dir in the tests

tests/accept/run/tpos.nim

@@ -1,35 +0,0 @@
-discard """
-  file: "tpos.nim"
-  output: "6"
-"""
-# test this particular function
-
-proc mypos(sub, s: string, start: int = 0): int =
-  var
-    i, j, M, N: int
-  M = sub.len
-  N = s.len
-  i = start
-  j = 0
-  if i >= N:
-    result = -1
-  else:
-    while True:
-      if s[i] == sub[j]:
-        Inc(i)
-        Inc(j)
-      else:
-        i = i - j + 1
-        j = 0
-      if (j >= M) or (i >= N): break
-    if j >= M:
-      result = i - M
-    else:
-      result = -1
-
-var sub = "hello"
-var s = "world hello"
-write(stdout, mypos(sub, s))
-#OUT 6
-
-