[Gpr_To_Absl_Logging] Remove custom gpr_log macros

Removing GRPC_IDLE_FILTER_LOG.
Replacing with GRPC_TRACE_LOG.

Reference : https://github.com/search?q=repo%3Agrpc%2Fgrpc+%22%23define+GRPC_TRACE_LOG%22&type=code
PiperOrigin-RevId: 649395611

src/core/ext/filters/channel_idle/legacy_channel_idle_filter.cc

@@ -71,13 +71,6 @@ const auto kMaxConnectionAgeJitter = 0.1;
 
 }  // namespace
 
-#define GRPC_IDLE_FILTER_LOG(format, ...)                               \
-  do {                                                                  \
-    if (GRPC_TRACE_FLAG_ENABLED(client_idle_filter)) {                  \
-      gpr_log(GPR_INFO, "(client idle filter) " format, ##__VA_ARGS__); \
-    }                                                                   \
-  } while (0)
-
 Duration GetClientIdleTimeout(const ChannelArgs& args) {
   return args.GetDurationFromIntMillis(GRPC_ARG_CLIENT_IDLE_TIMEOUT_MS)
       .value_or(kDefaultIdleTimeout);
@@ -259,7 +252,8 @@ void LegacyChannelIdleFilter::DecreaseCallCount() {
 }
 
 void LegacyChannelIdleFilter::StartIdleTimer() {
-  GRPC_IDLE_FILTER_LOG("timer has started");
+  GRPC_TRACE_LOG(client_idle_filter, INFO)
+      << "(client idle filter) timer has started";
   auto idle_filter_state = idle_filter_state_;
   // Hold a ref to the channel stack for the timer callback.
   auto channel_stack = channel_stack_->Ref();