Get rid of some unused JS variables in govarnishstat

cmd/govarnishstat/table.go

@@ -95,15 +95,12 @@ table.hitrate {
 
 <script type="text/javascript">
 var addr = "ws://" + location.hostname + ":" + location.port
-var tbl
 var tbody
 var show0 = false
 var show0_checkbox
 var formatting = true
 var verbosity = "INFO"
 var verbose_select
-var diag
-var debug
 
 function format_num(cell, val) {
 	if (cell.classList.contains("float")) {
@@ -325,15 +322,13 @@ function toggleShow0() {
 }
 
 window.onload = function() {
-	tbl = document.getElementById("statsTbl")
+	var tbl = document.getElementById("statsTbl")
 	tbody = tbl.getElementsByTagName('tbody')[0];
 	getD9ns()
 	getStats()
 	getHitrate()
 	verbose_select = document.getElementById("verbosity")
 	verbose_select.addEventListener("change", setVerbosity);
-	diag = document.getElementsByClassName("DIAG")
-	debug = document.getElementsByClassName("DEBUG")
 	show0_checkbox = document.getElementById("show0")
 	show0_checkbox.onclick = toggleShow0
 }