[OpenMP] Remove unused cpu_stackoffset member

GitOrigin-RevId: 7085f045739544b303e9147ab4e11f323bc782de
diff --git a/runtime/src/kmp.h b/runtime/src/kmp.h
index 75e06f8..bf4c812 100644
--- a/runtime/src/kmp.h
+++ b/runtime/src/kmp.h
@@ -1221,7 +1221,6 @@
   int stepping; // CPUID(1).EAX[3:0] ( Stepping )
   int sse2; // 0 if SSE2 instructions are not supported, 1 otherwise.
   int rtm; // 0 if RTM instructions are not supported, 1 otherwise.
-  int cpu_stackoffset;
   int apic_id;
   int physical_id;
   int logical_id;
diff --git a/runtime/src/kmp_utility.cpp b/runtime/src/kmp_utility.cpp
index 423b08e..c4bfead 100644
--- a/runtime/src/kmp_utility.cpp
+++ b/runtime/src/kmp_utility.cpp
@@ -230,16 +230,6 @@
       log_per_phy = data[2];
       p->apic_id = data[3]; /* Bits 31-24: Processor Initial APIC ID (X) */
       KA_TRACE(trace_level, (" HT(%d TPUs)", log_per_phy));
-
-      if (log_per_phy > 1) {
-/* default to 1k FOR JT-enabled processors (4k on OS X*) */
-#if KMP_OS_DARWIN
-        p->cpu_stackoffset = 4 * 1024;
-#else
-        p->cpu_stackoffset = 1 * 1024;
-#endif
-      }
-
       p->physical_id = __kmp_get_physical_id(log_per_phy, p->apic_id);
       p->logical_id = __kmp_get_logical_id(log_per_phy, p->apic_id);
     }