Refactored custom call IC generators:

src/assembler.cc

Index: src/assembler.cc
diff --git a/src/assembler.cc b/src/assembler.cc
index ac03c200c20ea05270c7b1e87c2658eeea75cb53..87f363b0c010b1950bfd39f58272cf25ddc34ee9 100644
--- a/src/assembler.cc
+++ b/src/assembler.cc
@@ -670,16 +670,6 @@ ExternalReference ExternalReference::scheduled_exception_address() {
 }
 
 
-ExternalReference ExternalReference::compile_array_pop_call() {
-  return ExternalReference(FUNCTION_ADDR(CompileArrayPopCall));
-}
-
-
-ExternalReference ExternalReference::compile_array_push_call() {
-  return ExternalReference(FUNCTION_ADDR(CompileArrayPushCall));
-}
-
-
 #ifndef V8_INTERPRETED_REGEXP
 
 ExternalReference ExternalReference::re_check_stack_guard_state() {