fix: feels laggy because of transition

Author: devvaannsh

src/styles/brackets_patterns_override.less

@@ -2557,7 +2557,6 @@ code {
             cursor: pointer;
             font-size: 12px;
             color: @bc-text;
-            transition: background-color 0.1s;
             border-left: 3px solid transparent;
 
             .dark & {