remove mistakenly added styles

public/sass/components/_panel_graph.scss

@@ -7,10 +7,6 @@
     @include media-breakpoint-up(sm) {
       flex-direction: row;
 
-      .graph-panel__chart {
-        flex: 2 1 10px;
-      }
-
       .graph-legend {
         flex: 0 1 10px;
         max-height: 100%;