removed junk (amending f8e3b228670c);

--- a/src/Pure/General/sql.scala	Mon Jul 17 16:02:28 2023 +0200
+++ b/src/Pure/General/sql.scala	Mon Jul 17 16:09:59 2023 +0200
@@ -474,7 +474,7 @@
 
       def trace(msg: String): Unit = {
         val trace_time = Time.now() - trace_start
-        if (trace_time >= trace_minx) {
+        if (trace_time >= trace_min) {
           val nl = if (trace_nl) "" else { trace_nl = true; "\n" }
           log(nl + trace_time + " transaction " + trace_count +
             if_proper(label, " " + label) + ": " + msg)