chromeos: remove WiMAX debugging mode in chrome://net-internals/#chromeos

WiMAX support on Chrome OS has been deprecated along with daisy.  This
CL removes the button to set WiMAX debugging mode on
chrome://net-internals/#chromeos.

Bug: 954635
Test: Verify that chrome://net-internals/#chromeos no longer shows a 'WiMAX' button.
Change-Id: Ia754b6aefcdb3ccdc976061038a004cc69171498
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1580903Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Ben Chan <benchan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#653642}

chrome/browser/resources/net_internals/chromeos_view.html

@@ -46,9 +46,6 @@
         <input type="button"
                value="Cellular"
                id="chromeos-view-network-debugging-cellular">
-        <input type="button"
-               value="WiMAX"
-               id="chromeos-view-network-debugging-wimax">
         <input type="button"
                name="subsystem"
                value="None"

chrome/browser/resources/net_internals/chromeos_view.js

@@ -187,9 +187,6 @@ const CrosView = (function() {
     $(CrosView.DEBUG_CELLULAR_ID).addEventListener('click', function(event) {
       setNetworkDebugMode_('cellular');
     }, false);
-    $(CrosView.DEBUG_WIMAX_ID).addEventListener('click', function(event) {
-      setNetworkDebugMode_('wimax');
-    }, false);
     $(CrosView.DEBUG_NONE_ID).addEventListener('click', function(event) {
       setNetworkDebugMode_('none');
     }, false);
@@ -251,7 +248,6 @@ const CrosView = (function() {
   CrosView.DEBUG_WIFI_ID = 'chromeos-view-network-debugging-wifi';
   CrosView.DEBUG_ETHERNET_ID = 'chromeos-view-network-debugging-ethernet';
   CrosView.DEBUG_CELLULAR_ID = 'chromeos-view-network-debugging-cellular';
-  CrosView.DEBUG_WIMAX_ID = 'chromeos-view-network-debugging-wimax';
   CrosView.DEBUG_NONE_ID = 'chromeos-view-network-debugging-none';
   CrosView.DEBUG_STATUS_ID = 'chromeos-view-network-debugging-status';