GN: Revert to default compiler optimizations for Win Release.

webrtc/build/webrtc.gni

Index: webrtc/build/webrtc.gni
diff --git a/webrtc/build/webrtc.gni b/webrtc/build/webrtc.gni
index 71a4eda8be75cd123365a717cf48c02448eed608..3c84363fcc93e43185bd54378d915fb16970bc90 100644
--- a/webrtc/build/webrtc.gni
+++ b/webrtc/build/webrtc.gni
@@ -190,11 +190,6 @@ rtc_common_inherited_config = webrtc_root + ":common_inherited_config"
 rtc_remove_configs = []
 rtc_add_configs = [ rtc_common_config ]
 
-if (!is_debug && is_win) {
-  rtc_remove_configs += [ "//build/config/compiler:default_optimization" ]
-  rtc_add_configs += [ "//build/config/compiler:optimize_max" ]
-}
-
 set_defaults("rtc_test") {
   configs = rtc_add_configs
   suppressed_configs = []