Remove duplicate css properties

client/galaxy/style/scss/autocomplete_tagging.scss

@@ -85,7 +85,6 @@
 
 .toggle-link {
     font-weight: normal;
-    padding: 0.3em;
     margin-bottom: 1em;
     width: 100%;
     padding: 0.2em 0em 0.2em 0em;

client/galaxy/style/scss/base.scss

@@ -1347,8 +1347,6 @@ div.permissionContainer {
 .text-content {
     hr {
         display: block;
-        background: black;
-        color: black;
         width: 100%;
         height: 1px;
         border: none;

client/galaxy/style/scss/frame.scss

@@ -147,8 +147,6 @@ $frame-default-border: $border-default-color;
             width: 16px;
             height: 16px;
             color: $brand-dark;
-            right: 0px;
-            bottom: 0px;
             text-align: center;
             line-height: 16px;
             border: 0px;

client/galaxy/style/scss/history.scss

@@ -514,7 +514,6 @@
             overflow: hidden;
             text-overflow: ellipsis;
             white-space: nowrap;
-            max-height: 22px;
         }
         &.control-column-right {
             text-align: right;

client/galaxy/style/scss/trackster.scss

@@ -26,7 +26,6 @@ $separator-color: #888;
     padding: 0 0;
     color: #333;
     font-weight: bold;
-    background: #cccccc;
     display: inline-block;
     top: -2em;
     background: transparent;

client/galaxy/style/scss/ui.scss

@@ -154,7 +154,6 @@ $ui-margin-horizontal-large: $margin-v * 2;
             font-style: italic;
         }
         .ui-form-backdrop {
-            display: none;
             z-index: 10;
             position: absolute;
             top: 0px;