Cleans up the Network UI after PR feedback and UX feedback

-removes stale commented-out lines
-makes "unknown" type devices smaller on canvas
-moves "unknown" type device title underneath icon
-removes collapsed inventory toolbox
-changes "Delete" to "Remove"
-removes the "Close" button for "Cancel" on details panel
-changing Remove color to red

awx/ui/client/src/network-ui/style.less

@@ -128,18 +128,18 @@
 
 .NetworkUI__router--selected {
     stroke: @selected-blue;
-    stroke-width: 4;
+    stroke-width: 10;
     fill:@light-background;
 }
 
 .NetworkUI__router--remote-selected {
     stroke: @selected-mango;
-    stroke-width: 4;
+    stroke-width: 10;
 }
 
 .NetworkUI__router--selected-conflict {
     stroke: @selected-red;
-    stroke-width: 4;
+    stroke-width: 10;
 }
 
 .NetworkUI__router-text {
@@ -672,6 +672,18 @@
     fill:@button-body-hover;
 }
 
+.NetworkUI__contextMenuRemoveButtonText{
+    fill: @red;
+    font-family: 'Open Sans';
+    font-size: 14px;
+}
+
+.NetworkUI__contextMenuRemoveButtonText-hover{
+    fill: @red;
+    font-family: 'Open Sans';
+    font-size: 14px;
+}
+
 .NetworkUI__test_results {
     fill: @light-background;
     stroke: @dark-widget-detail;