Remove unused VariableLocation::GLOBAL.

src/full-codegen/ppc/full-codegen-ppc.cc

Index: src/full-codegen/ppc/full-codegen-ppc.cc
diff --git a/src/full-codegen/ppc/full-codegen-ppc.cc b/src/full-codegen/ppc/full-codegen-ppc.cc
index e071c1e725c9e49d9bf39fe7084334644035b76a..e965a0760b67ec014041d314389caea543855533 100644
--- a/src/full-codegen/ppc/full-codegen-ppc.cc
+++ b/src/full-codegen/ppc/full-codegen-ppc.cc
@@ -727,7 +727,6 @@ 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();
@@ -778,7 +777,6 @@ 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());
@@ -1251,7 +1249,6 @@ 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);