Remove unused VariableLocation::GLOBAL.

src/full-codegen/x87/full-codegen-x87.cc

Index: src/full-codegen/x87/full-codegen-x87.cc
diff --git a/src/full-codegen/x87/full-codegen-x87.cc b/src/full-codegen/x87/full-codegen-x87.cc
index 319e92297d65fb370e11081f6db5e4c8904a473b..d0a9ba29d7caf0a14127aaa45f8a80adc780fc46 100644
--- a/src/full-codegen/x87/full-codegen-x87.cc
+++ b/src/full-codegen/x87/full-codegen-x87.cc
@@ -710,7 +710,6 @@ void FullCodeGenerator::VisitVariableDeclaration(
   VariableProxy* proxy = declaration->proxy();
   Variable* variable = proxy->var();
   switch (variable->location()) {
-    case VariableLocation::GLOBAL:
     case VariableLocation::UNALLOCATED: {
       DCHECK(!variable->binding_needs_init());
       FeedbackVectorSlot slot = proxy->VariableFeedbackSlot();
@@ -759,7 +758,6 @@ void FullCodeGenerator::VisitFunctionDeclaration(
   VariableProxy* proxy = declaration->proxy();
   Variable* variable = proxy->var();
   switch (variable->location()) {
-    case VariableLocation::GLOBAL:
     case VariableLocation::UNALLOCATED: {
       FeedbackVectorSlot slot = proxy->VariableFeedbackSlot();
       DCHECK(!slot.IsInvalid());
@@ -1201,7 +1199,6 @@ void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy,
   // Three cases: global variables, lookup variables, and all other types of
   // variables.
   switch (var->location()) {
-    case VariableLocation::GLOBAL:
     case VariableLocation::UNALLOCATED: {
       Comment cmnt(masm_, "[ Global variable");
       EmitGlobalVariableLoad(proxy, typeof_mode);