insns.def (opt_succ): remove Time#succ optimization

Time#succ is a deprecated method and not frequently used, so this wastes
icache in vm_exec_core.  Using bloat-o-meter in the Linux kernel source
to shows a small reduction on my x86-64 system:

$ ~/linux/scripts/bloat-o-meter ruby.before ruby.after
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-57 (-57)
function                                     old     new   delta
vm_exec_core                               24216   24159     -57

[Feature #10501]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48415 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 0 insertions, 4 deletions

diff --git a/insns.def b/insns.def
index 9e1c16be4c..eae0b8e1d8 100644
--- a/insns.def
+++ b/insns.def
@@ -2105,10 +2105,6 @@ opt_succ
 	    BASIC_OP_UNREDEFINED_P(BOP_SUCC, STRING_REDEFINED_OP_FLAG)) {
 	    val = rb_str_succ(recv);
 	}
-	else if (RBASIC_CLASS(recv) == rb_cTime &&
-		 BASIC_OP_UNREDEFINED_P(BOP_SUCC, TIME_REDEFINED_OP_FLAG)) {
-	    val = rb_time_succ(recv);
-	}
 	else
 	  {
 	    goto INSN_LABEL(normal_dispatch);