[arm] Remove --enable-movw-movt.

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index 4c6dea96f75e89fdb94724f97d3d82a4384981da..7d9af7c051628c02b7965cf499f92ff96402f692 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -411,16 +411,6 @@ void MacroAssembler::Store(Register src,
 void MacroAssembler::LoadRoot(Register destination,
                               Heap::RootListIndex index,
                               Condition cond) {
-  if (CpuFeatures::IsSupported(MOVW_MOVT_IMMEDIATE_LOADS) &&
-      isolate()->heap()->RootCanBeTreatedAsConstant(index) &&
-      !predictable_code_size()) {
-    CpuFeatureScope scope(this, MOVW_MOVT_IMMEDIATE_LOADS);
-    // The CPU supports fast immediate values, and this root will never
-    // change. We will load it as a relocatable immediate value.
-    Handle<Object> root = isolate()->heap()->root_handle(index);
-    mov(destination, Operand(root), LeaveCC, cond);
-    return;
-  }
   ldr(destination, MemOperand(kRootRegister, index << kPointerSizeLog2), cond);
 }