Remove unused reg_T2 definition

No longer used, remove it.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5641 c046a42c-6fe2-441c-8c8c-71466251a162

cpu-exec.c

@@ -59,10 +59,6 @@ void cpu_loop_exit(void)
     longjmp(env->jmp_env, 1);
 }
 
-#if !(defined(TARGET_SPARC) || defined(TARGET_SH4) || defined(TARGET_M68K))
-#define reg_T2
-#endif
-
 /* exit the current TB from a signal handler. The host registers are
    restored in a state compatible with the CPU emulator
  */