ntdll/tests: remove signedness test

[Austin English]

The signedness of char is architecture dependent, so this test breaks
on e.g., ppc32.

See also http://bugs.winehq.org/show_bug.cgi?id=16861

-- 
-Austin
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diff --git a/dlls/ntdll/tests/generated.c b/dlls/ntdll/tests/generated.c
index b7f1c9d..7ee2688 100644
--- a/dlls/ntdll/tests/generated.c
+++ b/dlls/ntdll/tests/generated.c
@@ -373,14 +373,12 @@ static void test_pack_BOOLEAN(void)
 static void test_pack_CCHAR(void)
 {
     /* CCHAR */
-    TEST_TYPE_SIZE   (CCHAR, 1)
     TEST_TYPE_ALIGN  (CCHAR, 1)
 }
 
 static void test_pack_CHAR(void)
 {
     /* CHAR */
-    TEST_TYPE_SIZE   (CHAR, 1)
     TEST_TYPE_ALIGN  (CHAR, 1)
 }