Remove NaCl support.

src/base/platform/platform-aix.cc

Index: src/base/platform/platform-aix.cc
diff --git a/src/base/platform/platform-aix.cc b/src/base/platform/platform-aix.cc
index 18b35b9066466bcf6c3b2c1a677e3abbccfd5663..ad272b37233735da7c6459c690ac700f7a24739c 100644
--- a/src/base/platform/platform-aix.cc
+++ b/src/base/platform/platform-aix.cc
@@ -215,13 +215,8 @@ void* VirtualMemory::ReserveRegion(size_t size) {
 
 
 bool VirtualMemory::CommitRegion(void* base, size_t size, bool is_executable) {
-#if defined(__native_client__)
-  // The Native Client port of V8 uses an interpreter,
-  // so code pages don't need PROT_EXEC.
-  int prot = PROT_READ | PROT_WRITE;
-#else
   int prot = PROT_READ | PROT_WRITE | (is_executable ? PROT_EXEC : 0);
-#endif
+
   if (mprotect(base, size, prot) == -1) return false;
 
   return true;