Add VMA naming fallback for LowLevelAlloc.

PiperOrigin-RevId: 908180914
Change-Id: If5266fa8ec5b8777fe7546b2454a562d7e26e0b8

absl/base/internal/low_level_alloc.cc

diff --git a/absl/base/internal/low_level_alloc.cc b/absl/base/internal/low_level_alloc.cc
index 3887a92..a5bd71d 100644
--- a/absl/base/internal/low_level_alloc.cc
+++ b/absl/base/internal/low_level_alloc.cc
@@ -47,12 +47,6 @@
 
 #ifdef __linux__
 #include <sys/prctl.h>
-#ifndef PR_SET_VMA
-#define PR_SET_VMA 0x53564d41
-#endif
-#ifndef PR_SET_VMA_ANON_NAME
-#define PR_SET_VMA_ANON_NAME 0
-#endif
 #endif
 
 #include <string.h>