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/ipaddress.cc b/rtc_base/ipaddress.cc
index c52c9a4..9967ff3 100644
--- a/rtc_base/ipaddress.cc
+++ b/rtc_base/ipaddress.cc
@@ -162,11 +162,10 @@
       std::string result;
       result.resize(INET6_ADDRSTRLEN);
       in6_addr addr = ipv6_address();
-      size_t len =
-          rtc::sprintfn(&(result[0]), result.size(), "%x:%x:%x:x:x:x:x:x",
-                        (addr.s6_addr[0] << 8) + addr.s6_addr[1],
-                        (addr.s6_addr[2] << 8) + addr.s6_addr[3],
-                        (addr.s6_addr[4] << 8) + addr.s6_addr[5]);
+      size_t len = snprintf(&(result[0]), result.size(), "%x:%x:%x:x:x:x:x:x",
+                            (addr.s6_addr[0] << 8) + addr.s6_addr[1],
+                            (addr.s6_addr[2] << 8) + addr.s6_addr[3],
+                            (addr.s6_addr[4] << 8) + addr.s6_addr[5]);
       result.resize(len);
       return result;
     }