ux(dashboard): minor cleanup

public/sass/_variables.dark.scss

@@ -275,13 +275,7 @@ $card-background: linear-gradient(135deg, #2f2f2f, #262626);
 $card-background-hover: linear-gradient(135deg, #343434, #262626);
 $card-shadow: -1px -1px 0 0 hsla(0, 0%, 100%, .1), 1px 1px 0 0 rgba(0, 0, 0, .3);
 
-// dash row
-$dash-row-background: linear-gradient(135deg, #262626, #292929);
-$dash-row-shadow: -1px -1px 0 0 hsla(0, 0%, 100%, .1), 1px 1px 0 0 rgba(0, 0, 0, .3);
-
 // footer
 $footer-link-color:   $gray-1;
 $footer-link-hover:   $gray-4;
 
-// Dashboard row
-$dash-row-border-color: $dark-4

public/sass/_variables.light.scss

@@ -302,6 +302,3 @@ $card-shadow: -1px -1px 0 0 hsla(0, 0%, 100%, .1), 1px 1px 0 0 rgba(0, 0, 0, .1)
 // footer
 $footer-link-color:   $gray-3;
 $footer-link-hover:   $dark-5;
-
-// Dashboard row
-$dash-row-border-color: $gray-4

public/sass/components/_row.scss

@@ -57,7 +57,7 @@
 .dash-row-dropview {
   position: relative;
   background:  $panel-bg;
-  border: 1px solid $dash-row-border-color;
+  border: $panel-border;
   margin: 0 $panel-margin $panel-margin*2 $panel-margin;
   padding: $panel-margin*2;
   display: flex;