Remove MIPS support

runtime/vm/profiler.cc

Index: runtime/vm/profiler.cc
diff --git a/runtime/vm/profiler.cc b/runtime/vm/profiler.cc
index 2e1d10b4a32ba9ff45afa3667183af154ffe2920..19c5db5535e1bb6e6deab94cf27b91513ea4958b 100644
--- a/runtime/vm/profiler.cc
+++ b/runtime/vm/profiler.cc
@@ -32,7 +32,7 @@ static const intptr_t kMaxSamplesPerTick = 4;
 DEFINE_FLAG(bool, trace_profiled_isolates, false, "Trace profiled isolates.");
 
 #if defined(HOST_OS_ANDROID) || defined(TARGET_ARCH_ARM64) ||                  \
-    defined(TARGET_ARCH_ARM) || defined(TARGET_ARCH_MIPS)
+    defined(TARGET_ARCH_ARM)
 DEFINE_FLAG(int,
             profile_period,
             10000,
@@ -288,11 +288,6 @@ bool ReturnAddressLocator::LocateReturnAddress(uword* return_address) {
   ASSERT(return_address != NULL);
   return false;
 }
-#elif defined(TARGET_ARCH_MIPS)
-bool ReturnAddressLocator::LocateReturnAddress(uword* return_address) {
-  ASSERT(return_address != NULL);
-  return false;
-}
 #elif defined(TARGET_ARCH_DBC)
 bool ReturnAddressLocator::LocateReturnAddress(uword* return_address) {
   ASSERT(return_address != NULL);