Remove unused prototype.  Add a fixs390.


git-svn-id: svn://svn.valgrind.org/vex/trunk@2968 8f6e269a-dfd6-0310-a8e1-e2731360e62c
diff --git a/priv/main_main.c b/priv/main_main.c
index 98ab2d2..49e644c 100644
--- a/priv/main_main.c
+++ b/priv/main_main.c
@@ -393,6 +393,7 @@
          mapRegs     = (void(*)(HRegRemap*,HInstr*, Bool)) mapRegs_S390Instr;
          genSpill    = (void(*)(HInstr**,HInstr**,HReg,Int,Bool)) genSpill_S390;
          genReload   = (void(*)(HInstr**,HInstr**,HReg,Int,Bool)) genReload_S390;
+         // fixs390: consider implementing directReload_S390
          ppInstr     = (void(*)(HInstr*, Bool)) ppS390Instr;
          ppReg       = (void(*)(HReg)) ppHRegS390;
          iselSB      = iselSB_S390;