Delete wrappers for snprintf and vsnprintf

Bug: webrtc:6424
Change-Id: I99373dc86e25caff20111408b104ff5dafa7b711
Reviewed-on: https://webrtc-review.googlesource.com/c/106322
Commit-Queue: Niels Moller <nisse@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25210}
diff --git a/rtc_base/testutils.h b/rtc_base/testutils.h
index 2ab4a35..25e1edc 100644
--- a/rtc_base/testutils.h
+++ b/rtc_base/testutils.h
@@ -21,7 +21,6 @@
 #include "rtc_base/checks.h"
 #include "rtc_base/gunit.h"
 #include "rtc_base/stream.h"
-#include "rtc_base/stringutils.h"
 
 namespace webrtc {
 namespace testing {
@@ -164,7 +163,7 @@
     va_list args;
     va_start(args, format);
     char buffer[1024];
-    size_t len = vsprintfn(buffer, sizeof(buffer), format, args);
+    size_t len = vsnprintf(buffer, sizeof(buffer), format, args);
     RTC_CHECK(len < sizeof(buffer) - 1);
     va_end(args);
     QueueData(buffer, len);