got rid of 'accept' dir in the tests

tests/accept/run/tnestif.nim

@@ -1,24 +0,0 @@
-discard """
-  file: "tnestif.nim"
-  output: "i == 2"
-"""
-# test nested ifs
-
-var
-    x, y: int
-x = 2
-if x == 0:
-    write(stdout, "i == 0")
-    if y == 0:
-        write(stdout, x)
-    else:
-        write(stdout, y)
-elif x == 1:
-    write(stdout, "i == 1")
-elif x == 2:
-    write(stdout, "i == 2")
-else:
-    write(stdout, "looks like Python")
-#OUT i == 2
-
-