Remove unused variables in ip_address_unittest.

Change-Id: I99bb6b5b8ea3ad813d31ca4995e38125fd1e93b1
Bug: None
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/323620
Commit-Queue: Jeremy Leconte <jleconte@google.com>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Auto-Submit: Jeremy Leconte <jleconte@google.com>
Cr-Commit-Position: refs/heads/main@{#40940}
diff --git a/rtc_base/ip_address_unittest.cc b/rtc_base/ip_address_unittest.cc
index 1ccc4f6..aee9b93 100644
--- a/rtc_base/ip_address_unittest.cc
+++ b/rtc_base/ip_address_unittest.cc
@@ -61,9 +61,6 @@
     "2401:fa00:4:x:x:x:x:x";
 static const std::string kIPv6PublicAddr2AnonymizedString =
     "2401:0:0:x:x:x:x:x";
-static const std::string kIPv4MappedAnyAddrString = "::ffff:0:0";
-static const std::string kIPv4MappedLoopbackAddrString = "::ffff:7f00:1";
-static const std::string kIPv4MappedPublicAddrString = "::ffff:102:0304";
 static const std::string kIPv4MappedV4StyleAddrString = "::ffff:192.168.7.1";
 
 static const std::string kIPv4BrokenString1 = "192.168.7.";