ref(SCSS) Remove some unused SASS variables (#12451)

css/_variables.scss

@@ -8,7 +8,6 @@ $hangupColor:#DD3849;
 $hangupHoverColor: #F25363;
 $hangupMenuButtonColor:#0056E0;;
 $hangupMenuButtonHoverColor: #246FE5;
-$hangupFontSize: 2em;
 
 /**
  * Size variables.
@@ -45,7 +44,6 @@ $newToolbarSizeMobile: 60px;
 $newToolbarSizeWithPadding: calc(#{$newToolbarSize} + 24px);
 $toolbarTitleFontSize: 19px;
 $overflowMenuItemColor: #fff;
-$overflowMenuItemBackground: #36383C;
 
 
 /**
@@ -88,7 +86,7 @@ $chatPrivateMessageBackgroundColor: rgb(153, 69, 77);
 $chatRemoteMessageBackgroundColor:  #242528;
 $sidebarWidth: 315px;
 
- /**
+/**
  * Misc.
  */
 $borderRadius: 4px;
@@ -103,8 +101,6 @@ $zindex0: 0;
 $zindex1: 1;
 $zindex2: 2;
 $zindex3: 3;
-$toolbarBackgroundZ: 4;
-$labelsZ: 5;
 $subtitlesZ: 7;
 $popoverZ: 8;
 $reloadZ: 20;
@@ -113,10 +109,7 @@ $ringingZ: 300;
 $sideToolbarContainerZ: 300;
 $toolbarZ: 250;
 $drawerZ: 351;
-$tooltipsZ: 401;
-$dropdownMaskZ: 900;
 $dropdownZ: 901;
-$centeredVideoLabelZ: 1010;
 $overlayZ: 1016;
 // Place filmstrip videos over toolbar in order
 // to make connection info visible.
@@ -250,7 +243,6 @@ $chromeExtensionBannerRightInMeeeting: 10px;
 /**
 * media type thresholds
 */
-$smallScreen: 700px;
 $verySmallScreen: 500px;
 
 /**

css/themes/_light.scss

@@ -6,8 +6,6 @@ $baseLight: #FFFFFF;
 /**
 * Controls
 */
-$controlBackground: $baseLight;
-$controlColor: #333333;
 $sliderTrackBackground: #474747;
 $sliderThumbBackground: #3572b0;
 
@@ -60,42 +58,21 @@ $readOnlyInputColor: #a7a7a7;
 $defaultDarkSelectionColor: #ccc;
 $buttonFontWeight: 400;
 $labelFontWeight: 400;
-$hintFontSize: em(13, 14);
 $linkFontColor: #3572b0;
 $linkHoverFontColor: darken(#3572b0, 10%);
-$dropdownColor: #333;
 $errorColor: #c61600;
 
-// Feedback colors
-$feedbackCancelFontColor: #333;
 
 // Popover colors
 $popoverFontColor: #ffffff !important;
 $popupSliderColor: #0376da;
 
 // Toolbar
-$secondaryToolbarBg: rgba(0, 0, 0, 0.5);
-// TOFIX: Once moved to react rename to match the side panel class name.
-$sideToolbarContainerBg: rgba(0, 0, 0, 0.75);
 $toolbarBackground: rgba(0, 0, 0, 0.5);
 $toolbarBadgeBackground: #165ECC;
 $toolbarBadgeColor: #FFFFFF;
-$toolbarButtonColor: #FFFFFF;
-$toolbarSelectBackground: rgba(0, 0, 0, .6);
-$toolbarTitleColor: #FFFFFF;
-$toolbarToggleBackground: #12499C;
-
 
 /**
  * Forms
  */
-//dropdown
-$selectFontColor: $controlColor;
-$selectBg: $controlBackground;
-$selectActiveBg: darken($controlBackground, 5%);
-$selectActiveItemBg: darken($controlBackground, 20%);
-
-/**
- * TODO: Replace by themed component.
- */
-$videoQualityActive: #57A0ff;
+$selectBg: $baseLight;