Revert "export for MJIT"

This reverts commit 2e6f1cf8b264f4c8499c4e5f18bf662fdade04ff.

insns.def

@@ -935,6 +935,8 @@ leave
 	}
     }
 
+    RUBY_VM_CHECK_INTS(ec);
+
     if (vm_pop_frame(ec, GET_CFP(), GET_EP())) {
 #if OPT_CALL_THREADED_CODE
 	rb_ec_thread_ptr(ec)->retval = val;

variable.c

@@ -799,7 +799,7 @@ gen_ivtbl_get(VALUE obj, struct gen_ivtbl **ivtbl)
     return 0;
 }
 
-MJIT_FUNC_EXPORTED struct st_table *
+struct st_table *
 rb_ivar_generic_ivtbl(void)
 {
     return generic_iv_tbl;

vm_insnhelper.c

@@ -2318,7 +2318,8 @@ vm_call_iseq_setup_tailcall(rb_execution_context_t *ec, rb_control_frame_t *cfp,
 		  iseq->body->stack_max);
 
     cfp->sp = sp_orig;
- 
+    RUBY_VM_CHECK_INTS(ec);
+
     return Qundef;
 }