Delete function Time32 as unused

PseudoTcp was (almost) the last user of this function.

Bug: chromium:431990415
Change-Id: Ie9f8880b6aa5b99f60dedc044e2b1437cd4eb491
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/402740
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Auto-Submit: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#45275}
diff --git a/rtc_base/time_utils.cc b/rtc_base/time_utils.cc
index 2e8670d..3910ab1 100644
--- a/rtc_base/time_utils.cc
+++ b/rtc_base/time_utils.cc
@@ -158,10 +158,6 @@
   return SystemTimeNanos();
 }
 
-uint32_t Time32() {
-  return static_cast<uint32_t>(TimeNanos() / kNumNanosecsPerMillisec);
-}
-
 int64_t TimeMillis() {
   return TimeNanos() / kNumNanosecsPerMillisec;
 }
diff --git a/rtc_base/time_utils.h b/rtc_base/time_utils.h
index d1615d5..4ad7651 100644
--- a/rtc_base/time_utils.h
+++ b/rtc_base/time_utils.h
@@ -78,9 +78,6 @@
 // Useful for timeouts while using a test clock, or for logging.
 int64_t SystemTimeMillis();
 
-// Returns the current time in milliseconds in 32 bits.
-uint32_t Time32();
-
 // Returns the current time in milliseconds in 64 bits.
 RTC_EXPORT int64_t TimeMillis();
 // Deprecated. Do not use this in any new code.
diff --git a/rtc_base/time_utils_unittest.cc b/rtc_base/time_utils_unittest.cc
index fff5f74..5ec92aa 100644
--- a/rtc_base/time_utils_unittest.cc
+++ b/rtc_base/time_utils_unittest.cc
@@ -166,7 +166,6 @@
   SetClockForTesting(&clock);
 
   clock.SetTime(Timestamp::Micros(987654));
-  EXPECT_EQ(987u, Time32());
   EXPECT_EQ(987, TimeMillis());
   EXPECT_EQ(987654, TimeMicros());
   EXPECT_EQ(987654000, TimeNanos());