target/ppc: Clean up ifdefs in excp_helper.c, part 2

Remove check for !defined(CONFIG_USER_ONLY) as this is already within
an #ifndef CONFIG_USER_ONLY block.

Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

target/ppc/excp_helper.c

@@ -2663,7 +2663,7 @@ void helper_hrfid(CPUPPCState *env)
 }
 #endif /* TARGET_PPC64 */
 
-#if defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY)
+#ifdef TARGET_PPC64
 void helper_rfebb(CPUPPCState *env, target_ulong s)
 {
     target_ulong msr = env->msr;
@@ -2738,7 +2738,7 @@ void raise_ebb_perfm_exception(CPUPPCState *env)
 
     do_ebb(env, POWERPC_EXCP_PERFM_EBB);
 }
-#endif /* defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY) */
+#endif /* TARGET_PPC64 */
 
 /*****************************************************************************/
 /* Embedded PowerPC specific helpers */