crt: testcases: Remove leftover includes of _mingw_print_push.h

This header was removed in 70860d945e6be713af352ee62820bccb653589c2
in 2018.

Signed-off-by: Martin Storsjö <martin@martin.st>
diff --git a/mingw-w64-crt/testcases/t_ansi_io.c b/mingw-w64-crt/testcases/t_ansi_io.c
index dc3d0ca..35f8716 100644
--- a/mingw-w64-crt/testcases/t_ansi_io.c
+++ b/mingw-w64-crt/testcases/t_ansi_io.c
@@ -8,10 +8,8 @@
   printf ("%zd %p\n", (intptr_t) argc, argv[0]);
   fprintf (stdout, "%zd %p %" PRIuPTR "\n", (intptr_t) argc, argv[0], (intptr_t) argv[0]);
 
-#include <_mingw_print_push.h>
   printf ("%Id %p\n", (intptr_t) argc, argv[0]);
   fprintf (stdout, "%Id %p %" PRIuPTR "\n", (intptr_t) argc, argv[0], (intptr_t) argv[0]);
-#include <_mingw_print_pop.h>
   return 0;
 }