revert special checkbox css for headlines-frame

css/default.css

@@ -686,13 +686,6 @@ body.ttrss_main #headlines-frame {
   -webkit-transform: translateZ(0);
   -webkit-backface-visibility: hidden;
 }
-body.ttrss_main #headlines-frame .dijitCheckBox:not(.dijitCheckBoxChecked) {
-  background: transparent;
-  opacity: 0.9;
-}
-body.ttrss_main #headlines-frame .dijitCheckBox:not(.dijitCheckBoxChecked)::before {
-  color: #888888;
-}
 body.ttrss_main #headlines-frame div.feed-title {
   border: 0px solid #257aa7;
   border-bottom-width: 1px;

css/tt-rss.less

@@ -805,15 +805,6 @@ body.ttrss_main {
 		-webkit-transform: translateZ(0);
 		-webkit-backface-visibility: hidden;
 
-		.dijitCheckBox:not(.dijitCheckBoxChecked) {
-			background: transparent;
-			opacity : 0.9;
-		}
-
-		.dijitCheckBox:not(.dijitCheckBoxChecked)::before {
-			color : lighten(@default-text, 20%);
-		}
-
 		div.feed-title {
 			border: 0px solid @color-link;
 			border-bottom-width: 1px;

themes/night.css

@@ -686,13 +686,6 @@ body.ttrss_main #headlines-frame {
   -webkit-transform: translateZ(0);
   -webkit-backface-visibility: hidden;
 }
-body.ttrss_main #headlines-frame .dijitCheckBox:not(.dijitCheckBoxChecked) {
-  background: transparent;
-  opacity: 0.9;
-}
-body.ttrss_main #headlines-frame .dijitCheckBox:not(.dijitCheckBoxChecked)::before {
-  color: #888888;
-}
 body.ttrss_main #headlines-frame div.feed-title {
   border: 0px solid #257aa7;
   border-bottom-width: 1px;