CPU/NewRec: Fix register allocation crash on Linux

src/core/cpu_code_cache_private.h

@@ -229,9 +229,6 @@ void InterpretUncachedBlock();
 
 void LogCurrentState();
 
-#if defined(ENABLE_RECOMPILER) || defined(ENABLE_NEWREC)
-#define ENABLE_RECOMPILER_SUPPORT 1
-
 #if defined(_DEBUG) || false
 // Enable disassembly of host assembly code.
 #define ENABLE_HOST_DISASSEMBLY 1
@@ -278,6 +275,4 @@ extern PerfScope MIPSPerfScope;
 
 #endif // ENABLE_RECOMPILER_PROFILING
 
-#endif // ENABLE_RECOMPILER
-
 } // namespace CPU::CodeCache