Revert "Allow enabling trace annotations"

This reverts commit f094bac.

Reason for revert: Causes timeouts on Debug bots in the BufferDataTest.NULLData

Original change's description:
> Allow enabling trace annotations
> 
> Tracing was never allowed to happen because getStatus always returned
> false. Also want to allow tracing for release builds for perf analysis.
> 
> Bug: angleproject:3176
> Change-Id: I7aa94ed9fe3d7f67fe6dd10123c9badc7fb49d82
> Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1475248
> Commit-Queue: Courtney Goeltzenleuchter <courtneygo@google.com>
> Reviewed-by: Jamie Madill <jmadill@google.com>

TBR=ynovikov@chromium.org,geofflang@chromium.org,jmadill@google.com,courtneygo@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: angleproject:3176
Change-Id: I91d28d15a092519551811a9a07c01987c9e028e7
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1505799
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

BUILD.gn

@@ -200,7 +200,7 @@ config("angle_disable_pool_alloc") {
 }
 
 config("debug_annotations_config") {
-  if (is_debug || angle_enable_trace) {
+  if (is_debug) {
     defines = [ "ANGLE_ENABLE_DEBUG_ANNOTATIONS" ]
   }
 }

src/libANGLE/LoggingAnnotator.cpp

@@ -16,11 +16,7 @@ namespace angle
 
 bool LoggingAnnotator::getStatus()
 {
-#if defined(ANGLE_TRACE_ENABLED)
-    return true;
-#else
     return false;
-#endif
 }
 
 void LoggingAnnotator::beginEvent(const char *eventName, const char *eventMessage)