Remove flag track-allocation-sites.

src/mips/full-codegen-mips.cc

Index: src/mips/full-codegen-mips.cc
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index 4225270e672e7dedc40184015d62078930e1bf5a..30b24a3cee93273c0494c1e40c946532eea4623c 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -1793,8 +1793,7 @@ void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) {
   Handle<FixedArrayBase> constant_elements_values(
       FixedArrayBase::cast(constant_elements->get(1)));
 
-  AllocationSiteMode allocation_site_mode = FLAG_track_allocation_sites
-      ? TRACK_ALLOCATION_SITE : DONT_TRACK_ALLOCATION_SITE;
+  AllocationSiteMode allocation_site_mode = TRACK_ALLOCATION_SITE;
   if (has_fast_elements && !FLAG_allocation_site_pretenuring) {
     // If the only customer of allocation sites is transitioning, then
     // we can turn it off if we don't have anywhere else to transition to.