updated tests to be executed

tests/async/tasyncall.nim

@@ -2,7 +2,7 @@ discard """
   file: "tasyncall.nim"
   exitcode: 0
 """
-import times, sequtils, unittest
+import times, sequtils
 import asyncdispatch
 
 const

tests/async/tasyncssl.nim

@@ -3,7 +3,12 @@ discard """
   cmd: "nim $target --hints:on --define:ssl $options $file"
   output: "500"
   disabled: "windows"
+  target: c
+  action: compile
 """
+
+# XXX, deactivated
+
 import asyncdispatch, asyncnet, net, strutils, os
 
 when defined(ssl):