Fix spectrum frequency

Author: DzikuVx

js/flightlog_parser.js

@@ -508,6 +508,7 @@ var FlightLogParser = function(logData) {
             case "dynThrPID":
             case "tpa_breakpoint":
             case "serialrx_provider":
+            case "looptime":
             case "deadband":
             case "yaw_deadband":
             case "gyro_lpf":

js/graph_spectrum.js

@@ -48,7 +48,6 @@ function FlightLogAnalyser(flightLog, canvas, analyserCanvas) {
 
     try {
         var sysConfig = flightLog.getSysConfig();
-        var pidRate = (1000000 / sysConfig['looptime']).toFixed(0); //default for old logs
         var isFullscreen = false;
         var analyserZoomXElem = $("#analyserZoomX");
         var analyserZoomYElem = $("#analyserZoomY");